lemon

(noun) yellow oval fruit with juicy acidic flesh.

(noun) a strong yellow color. Synonyms: gamboge, lemon yellow, maize.

(noun) a small evergreen tree that originated in Asia but is widely cultivated for its fruit. Synonyms: lemon tree, Citrus limon.

(noun) a distinctive tart flavor characteristic of lemons.

(noun) an artifact (especially an automobile) that is defective or unsatisfactory. Synonyms: stinker.