(1)鉛(soft，heavy，grayish metal)[U]：We must remove～from petrol because it is poisonous. 我們必須去除汽油中的鉛，因?yàn)樗卸尽s heavy as～很重;～pipes 鉛管;
(2)鉛筆芯(dark gray substance inside a pencil)[U，C]：The～of my pencil is broken. 我的鉛筆芯斷了。L～pencils contain black～.鉛筆里面有黑色的鉛芯。
(3)(航海)測(cè)深錘(weight attached to a line and tossed over the side of the ship for measuring the depth)[C]：cast the～用測(cè)深錘測(cè)深;
→′leaden adj 鉛色的;沉重(悶)的;′leaded adj 加鉛的;用鉛條為框架的;′leadless adj 無鉛的;′lead-′poisoning n 鉛中毒