noun an inflammatory and suppurative affection of the feet in certain animals. in the horse it is in the frog.
2. thrush ·noun any one of numerous species of singing birds belonging to turdus and allied genera. they are noted for the sweetness of their songs.
3. thrush ·noun an affection of the mouth, fauces, ·etc., common in newly born children, characterized by minute ulcers called aphthae. ·see aphthae.
4. thrush ·noun any one of numerous species of singing birds more or less resembling the true thrushes in appearance or habits; as the thunderbird and the american brown thrush (or thrasher). ·see brown thrush.