Webster's Revised Unabridged Dictionary · 1913

Headless

Headless , adjective

[Anglo-Saxon heáfodleás.]

1.
Having no head; beheaded; as, a headless body, neck, or carcass.
2.
Destitute of a chief or leader. — Sir W. Raleigh
3.
Destitute of understanding or prudence; foolish; rash; obstinate; mindless. [Obsolete]
Witless headiness in judging or headless hardiness in condemning. — Spenser