Throstle. A spinning frame, a modification of Arkwright's water frame, said to derive its name from a low musical hum, due to the high speed which it attains, which is supposed to resemble the note of the "throstle" or wild thrush. It was introduced in 1815, but has since been greatly improved upon. The throstle frame is now used exclusively for the production of warps. In the most approved machines of this kind the spindles make 5,500 revolutions a minute, each spindle producing 27 hanks per week of 56 hours, when spinning No. 32 yarn. As each throstle contains from 200 to 300 spindles the weekly production of warp per throstle amounts to about 5,670,000 yards. [See Spinning, Factory]