Thros"tle (?), n. [OE. throsel, AS. þrostle, þrosle; akin to MHG.
trostel, G. drossel, Icel. þröstr, Sw. trast, Lith. strazdas, L.
turdus. √238. Cf. Thrush the bird.] 1. (Zoöl.) The song thrush. See
under Song.
2. A machine for spinning wool, cotton, etc., from the rove, consisting
of a set of drawing rollers with bobbins and flyers, and differing from
the mule in having the twisting apparatus stationary and the processes
continuous; — so called because it makes a singing noise.