- Any one of numerous species of singing birds belonging to
Turdus and allied genera. They are noted for the sweetness of their
songs. - 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. - An affection of the mouth, fauces, etc., common in newly
born children, characterized by minute ulcers called aphthae. See
Aphthae. - An inflammatory and suppurative affection of the feet in
certain animals. In the horse it is in the frog.