What does acephalous mean?
The definition of acephalous
A*ceph”a*lous, a.
Etym: [See Acephal.]

1 Headless.
2 (Zoöl.)
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.