Webster's Revised Unabridged Dictionary · 1913

Thrall

Thrall , noun

[Old English thral, þral, Icelandic þrall, perhaps through Anglo-Saxon þral; akin to Swedish tral, Danish tral, and probably to Anglo-Saxon þragian to run, Gothic þragjan, Greek tre`chein; compare Old High German dregil, drigil, a servant.]

1.
A slave; a bondman. — Chaucer
Gurth, the born thrall of Cedric. — Sir W. Scott
2.
Slavery; bondage; servitude; thraldom. — Tennyson
He still in thrall Of all-subdoing sleep. — Chapman
3.
A shelf; a stand for barrels, etc. [Provincial English]

Thrall , adjective

Of or pertaining to a thrall; in the condition of a thrall; bond; enslaved. [Obsolete] — Spenser
The fiend that would make you thrall and bond. — Chaucer

Thrall , transitive verb

To enslave. [Obsolete or Poetic] — Spenser