8. (Biol.) The chalaza of a bird's egg; the treadle.

9. (Far.) A bruise or abrasion produced on the foot or ankle of a horse

that interferes. See Interfere, 3.

Tread"board` (?), n. [Arch.] See Tread, n., 5.

Tread"er (?), n. One who treads. Isa. xvi. 10.

Tread"fowl` (?), n. A cock. [Obs.] Chaucer.

Trea"dle (?), n. [OE. tredyl a step, AS. tredel. See Tread.] 1. The

part of a foot lathe, or other machine, which is pressed or moved by

the foot.