n. 1. (Zool.) (a) A small European song bird (Sylvia atricapilla), with a black crown; the mock nightingale. (b) An American titmouse (Parus atricapillus); the chickadee. Also called the black-cap chickadee. [ 1913 Webster ]
2. (Cookery) An apple roasted till black, to be served in a dish of boiled custard. [ 1913 Webster ]