Spearhead

['spɪəhed] or ['spɪr'hɛd]

解释:

(noun.) the head and sharpened point of a spear.

(noun.) the leading military unit in an attack.

(noun.) someone who leads or initiates an activity (attack or campaign etc.).

(verb.) be the leader of; 'She spearheaded the effort to find a cure for the disease'.

校对:利昂--From WordNet

解释:

(n.) The pointed head, or end, of a spear.

杰克逊整理