What is "citron tree"

Citron \Cit"ron\ (s[i^]t"r[u^]n), n. [F. citron, LL. citro, fr. L. citrus citron tree (cf. citreum, sc. malum, a citron), from Gr. ki`tron citron]

1. (Bot) A fruit resembling a lemon, but larger, and pleasantly aromatic; it is produced by the citron tree ( Citrus medica). The thick rind, when candied, is the citron of commerce. The fruit was once called the lime.

2. A citron tree, Citrus medica.

3. A citron melon. Citron melon.

   1. A small variety of muskmelon with sugary greenish flesh.

   2. A small variety of watermelon, whose solid white flesh is used in making sweetmeats and preserves.

      Citron tree (Bot.), the tree which bears citrons. It was probably a native of northern India, and is now understood to be the typical form of Citrus Medica.

n. thorny evergreen small tree or shrub of India widely cultivated for its large lemonlike fruits that have thick warty rind [syn: citron, Citrus medica]