'Citron tree' definitions:

Definition of 'citron tree'

From: WordNet
noun
Thorny evergreen small tree or shrub of India widely cultivated for its large lemonlike fruits that have thick warty rind [syn: citron, citron tree, Citrus medica]

Definition of 'Citron tree'

From: GCIDE
  • 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. [1913 Webster]
  • 2. A citron tree, Citrus medica. [1913 Webster]
  • 3. A citron melon. [1913 Webster]
  • Citron melon. (a) A small variety of muskmelon with sugary greenish flesh. (b) 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. [1913 Webster]