Two histories under one spelling
English writes lead for a verb meaning to guide, go first, or take charge, and for the heavy metal whose chemical symbol is Pb. Speakers do not treat those as one word in speech. The verb rhymes with need. The metal rhymes with red. That split in sound is the first clue that the spelling hides two older English words, not a single root that later split in meaning.
The origin of the word lead is therefore a pair of stories that happen to share letters. One is a native Germanic verb built as a causative of going. The other is a West Germanic name for the metal, of uncertain deeper source, and almost certainly unrelated to the verb.
A verb that means causing someone to go
The guiding verb is inherited from Old English. The form was lǣdan. It already covered a wide practical range: to cause a person to go with you, to march at the head of a group, to show the way, to carry something along, even to bring forth or to pass a life in a certain manner. The word was already a workhorse of motion and conduct.
Grammatically it is a causative. It sits beside Old English līþan, also written liðan, meaning to travel or to go. To lǣdan someone was, in the oldest layer of the morphology, to make them go. That pattern is reconstructed for Proto-West Germanic as laidijan and for Proto-Germanic as laidijaną, the causative of līþaną. Beyond Germanic, etymologists usually point to a Proto-Indo-European root of the leit- or leyt- type, with a sense of going forth or leaving. The exact PIE gloss is not settled in every handbook.
The verb is Common Germanic, though Gothic does not preserve this particular causative. Close relatives include Dutch leiden, German leiten, West Frisian liede, and Old Norse leiða. Related go-verbs survive in Old Norse liða and Gothic ga-leiþan. English also keeps a quieter cousin in lode, from an old Germanic noun for a way or course: a vein of ore is a path through rock.
Old English already had the agent noun lǣdere, the ancestor of leader, with parallels in Dutch leider and German Leiter. The past tense led looks irregular only now. It comes from Old English lǣdde. The long vowel shortened before a double consonant, so the past no longer matches the present in spelling or sound. That is why the verb is lead / led, while a later verb meaning to cover with the metal can take leaded.
How the guiding sense widened
The core idea never left. What changed is the kind of thing that can be guided. By about 1200, a road can lead: the path itself conducts you. By the late fourteenth century the verb can mean to be in first place, not only to escort. An intransitive use, to act as a leader, is recorded from the 1570s. Card players begin a trick by leading from the 1670s. Taking the directing part in music or prayer is a nineteenth-century extension of the same figure.
A noun grew from the verb around 1300, first as the action of leading, later as the front position from the 1560s. Theater took lead for the principal role by 1831. Journalism’s opening summary is recorded from 1912. Printers already used lead for a strip of type metal that spaced lines, so some newsrooms later spelled the opening as lede to keep the two senses apart on the page. A clue that leads toward a solution is attested from the 1850s; to follow someone’s lead, as an example, is a little later. None of these require a new root. They are the old causative of going, stretched onto rank, performance, and inquiry. Latin ducere was the usual translation equivalent, and that long pairing helped some abstract conduct senses feel natural without turning the English word into a Latin loan.
The metal is a different word
The metal name is Old English lēad, Middle English led or leed. It comes from West Germanic lauda-, the source also of Dutch lood and German Lot, the last of which more often means a weight or plummet than the metal itself. Swedish lod and Icelandic lóð sit in the same family of sounding lines. English inherited the word from West Germanic. What lies behind that Germanic form is less clear.
Many accounts treat the name, and the metalworking knowledge attached to it, as a borrowing from Celtic. Old Irish luaide and modern Irish luaidhe are the usual comparisons. A reconstructed Proto-Celtic form is often offered as the donor and sometimes linked to a root meaning to flow, a plausible image for a metal that melts easily. The same family is occasionally brought near Latin plumbum, the source of the symbol Pb. Here the handbooks disagree. The Latin m is hard to derive from that flow root, and some scholars suspect a still older loan into the Indo-European languages. The honest summary is that Germanic took a metal name of uncertain prehistory, quite likely by way of Celtic, and that this name is not the verb lead.
Because the metal is dense, lead became a figure for weight by the early fourteenth century. From the 1590s it could stand for bullets. Pencil lead is a fossil of a scientific mistake: graphite was once called black lead, as if it were a form of the metal. Lead pencil is found from the 1680s; the sense of graphite in a pencil is early nineteenth century. Printing added the strip of type metal used to space lines, and from that the noun leading for vertical space on a page. Those printer’s leads are why a news lede sometimes changed its spelling. A verb from the metal, to cover with lead, appears in the fifteenth century. Roofing leads and sounding leads at sea stay with this second word. They share spelling with command and guidance only by accident of English orthography.
What the homograph still teaches
The past tense led and the metal lead are now perfect homophones, while the present-tense verb is not. That accident of sound marks the line the dictionaries draw: one word is a Germanic causative of going, still visible in Dutch leiden and German leiten; the other is a West Germanic metal name with a disputed Celtic past, still visible in Dutch lood and in the plummet senses of German Lot. English happened to write both with the same four letters. The language did not derive command from the metal, or the metal from command.