n. 铅, 铅条, 领导, 超前量, 领引, 榜样, 主角, 导线

vt. 引导, 带领, 领导, 指挥, 致使, 加铅于, 用铅包

vi. 领导, 带头, 导致, 用测深锤测深, 被铅覆盖

a. 带头的, 最重要的

n. an advantage held by a competitor in a race

n. a soft heavy toxic malleable metallic element; bluish white when freshly cut but tarnishes readily to dull grey

n. evidence pointing to a possible solution

n. a position of leadership (especially in the phrase `take the lead')