Webster's Revised Unabridged Dictionary · 1913

Acephali

Acephali ({not transcribed}) , noun, plural

[Late Latin, plural of acephalus. See Acephal.]

1.
A fabulous people reported by ancient writers to have heads.
2.
(a) (Ecclesiastical Hist.) A Christian sect without a leader.
(b)
(Ecclesiastical Hist.) Bishops and certain clergymen not under regular diocesan control.
3.
A class of levelers in the time of K. Henry I.