Real Dictionary

lead being ahead or taking someone somewhere
If you have the lead or are in the lead in a race or competition, you are winning.
singular noun: Someone's lead over a competitor at a particular point in a race or competition is the distance, amount of time, or number of points by which they are ahead of them.
verb: If a road, gate, or door leads somewhere, you can get there by following the road or going through the gate or door.
verb: If one company or country leads others in a particular activity such as scientific research or business, it is more successful or advanced than they are in that activity.
verb: If you are leading at a particular point in a race or competition, you are winning at that point.
verb: If you lead a group of people, you walk or ride in front of them.
verb: If you lead someone to a particular place or thing, you take them there.

lead in American English 1
to show the way to, or direct the course of, by going before or along with; conduct; guide
intransitive verb: to act as a guide; show the way
transitive verb: to go before or with to show the way; conduct or escort

lead in American English 2
a heavy, soft, malleable, bluish-gray metallic chemical element used in batteries and in numerous alloys and compounds: symbol, Pb; at. no., 82
made of or containing lead
to cover, line, weight, or fasten with lead or leads
noun: a heavy, comparatively soft, malleable, bluish-gray metal, sometimes found in its natural state but usually combined as a sulfide, esp. in galena; at. wt.: 207.19; at. no.: 82; sp. gr.: 11.34 at 20°C

lead in British English 1
verb: to show the way to (an individual or a group) by going with or ahead

lead in British English 2
noun: a heavy toxic bluish-white metallic element that is highly malleable: occurs principally as galena and used in alloys, accumulators, cable sheaths, paints, and as a radiation shield. Symbol: Pb; atomic no: 82; atomic wt: 207.2; valency: 2 or 4; relative d

lead in Electrical Engineering
verb: If a voltage signal leads the corresponding current signal, then it is in advance of it.

lead substances
uncountable noun: Lead is a soft, grey, heavy metal.