- spear-head (n.)
[spear-head 词源字典]
- c. 1400, from spear (n.1) + head (n.). Figurative sense of "leading element" (of an attack, movement, etc.) is attested from 1893; the verb in this sense is recorded from 1938. Related: Spearheaded; spearheading.[spear-head etymology, spear-head origin, 英语词源]