Used other than figuratively or idiomatically: see lead, out. / (poker slang) To bet into a pot postflop from the first betting position.

(printing, historical, transitive) To pad out (text) by inserting lead slugs between words.

(inorganic chemistry) A yellow oxide of lead, PbO, used in the manufacture of paints and glass.

A bright red, poisonous oxide of lead, Pb₃O₄, used as a pigment and in glass and ceramics. / (military slang, dated) Tomato ketchup.

(chemistry) A poorly-characterized oxide of lead, Pb₂O; it is a black, amorphous solid

On a steam locomotive, an unpowered wheel located in front of the driving wheels.

On a steam locomotive, an axle connecting a coupled pair of unpowered wheels located in front of the driving wheels.

On a steam locomotive, a railroad truck to which wheel axles (and, hence, wheels) for one or more coupled pairs of unpowered wheels are attached through bearings, located in front of the driving wheels.

(music) The primary words of a song, sung by the lead vocalist to the same tune as the primary melody

(music) A singer (or one of a small group of singers) who provides lead vocals to a song