Definition of: citron

(sit′rən) noun
1. A fruit like a lemon, but larger and less acid.
2. The tree (Citrus medica) producing this fruit.
3. A watermelon (Citrullus vulgaris citroides), with a small, hard–fleshed fruit.
4. The rind of either of these fruits, preserved and used in confections. [<F <Ital. citrone <L citrus citrus tree]