From The Collaborative International Dictionary of English v.0.48:
Thrall \Thrall\, a. Of or pertaining to a thrall; in the condition of a thrall; bond; enslaved. [Obs.] --Spenser. [1913 Webster]
The fiend that would make you thrall and bond. --Chaucer. [1913 Webster]
From The Collaborative International Dictionary of English v.0.48:
Thrall \Thrall\, v. t. To enslave. [Obs. or Poetic] --Spenser. [1913 Webster]
From The Collaborative International Dictionary of English v.0.48:
Thrall \Thrall\, n. [OE. thral, [thorn]ral, Icel. [thorn]r[ae]ll, perhaps through AS. [thorn]r[=ae]l; akin to Sw. tr[aum]l, Dan. tr[ae]l, and probably to AS. [thorn]r[ae]gian to run, Goth. [thorn]ragjan, Gr. tre`chein; cf. OHG. dregil, drigil, a servant.] 1. A slave; a bondman. --Chaucer. [1913 Webster]
Gurth, the born thrall of Cedric. --Sir W. Scott. [1913 Webster]
2. Slavery; bondage; servitude; thraldom. --Tennyson. [1913 Webster]
He still in thrall Of all-subdoing sleep. --Chapman. [1913 Webster]
3. A shelf; a stand for barrels, etc. [Prov. Eng.] [1913 Webster]