(idiomatic) To become the leader, to advance into first place. / (idiomatic) To assume leadership over a group.

(obsolete, nautical) To fill the hollow in the bottom of a sounding lead with tallow in order to discover the nature of the bottom by the substances adhering.

(inorganic chemistry) The oxide of lead, PbO, that occurs as the minerals litharge and massicot

(inorganic chemistry) The unstable tetrahydride of lead, PbH₄, plumbane

(inorganic chemistry) The insoluble lead salt or sulfuric acid, PbSO₄, that forms in lead-acid batteries

Describing a battery having lead electrodes and an electrolyte of sulfuric acid solution; used in motor vehicles

plural of jump lead

(usually in the plural) Synonym of jumper cable

(idiomatic) An acclaimed expert, one of the foremost experts, a luminary. / (nautical, navigation) A light that helps to guide vessels into a port.

plural of leading light