Acephal \Ac"e*phal\, n. [Gr. ?; 'a priv. + ? head: cf. F. ac['e]phale, LL. acephalus.]

(Zool.) One of the Acephala. [1913 Webster]

Source: The Collaborative International Dictionary of English v.0.48
 

Acephal \Ac"e*phal\, n. [Gr. ?; 'a priv. + ? head: cf. F. ac['e]phale, LL. acephalus.]

(Zo["o]l.) One of the Acephala.

Source: Webster's Revised Unabridged Dictionary (1913)