Emily Dickinson Lexicon

TART, n. [D. taart; Sw. tart; Fr. tarte; It. torta; G. torte; Sp. tarta. The Italian and German orthography seem to connect this word with torto, L. tortus, twisted; and this may be the primary sense of tart, acid, sharp, and hence this noun, something acid or made of acid fruit. But qu.]

A species of pie or pastry, consisting of fruit baked on paste.