An oval or roundish fruit resembling the orange, and containing a pulp usually intensely acid. It is produced by a tropical tree of the genus Citrus, the common fruit known in commerce being that of the species C. Limonum or C. Medica (var. Limonum). There are many varieties of the fruit, some of which are sweet.
- A spiny, Asian evergreen tree (Citrus limon) widely cultivated for its yellow, egg-shaped fruit.
- The fruit of this tree, having a yellow aromatic rind and juicy, acid pulp.
- Lemon yellow.
- Informal One that is unsatisfactory or defective: Their new car turned out to be a lemon.
- Made from lemons.
- Tasting or smelling like lemons.