\A*ceph"a*lous\, a. [See {Acephal}.]
1. Headless.
2. (Zo["o]l.) Without a distinct head; -- a term applied to
   bivalve mollusks.
3. (Bot.) Having the style spring from the base, instead of
   from the apex, as is the case in certain ovaries.
4. Without a leader or chief.
5. Wanting the beginning.
         A false or acephalous structure of sentence. --De
                                               Quincey.
6. (Pros.) Deficient and the beginning, as a line of poetry.
   --Brande.