FRUSH (4)

Frush, n. [[Cf. OE. frosch, frosk, a frog (the animal), G. frosch frog (the animal), also carney or lampass of horses. See Frog, n., 2.]] 1. 1. (Far.) The frog of a horse's foot.
2. 2. A discharge of a fetid or ichorous matter from the frog of a horse's foot; — also caled thrush.