A creeping plant, and its fruit, of several species of the genus Cucumis, esp. Cucumis sativus, the unripe fruit of which is eaten either fresh or picked. Also, similar plants or fruits of several other genera. See below.
- A tendril-bearing, climbing or sprawling annual plant (Cucumis sativus) widely cultivated for its edible cylindrical fruit that has a green rind and crisp white flesh.
- The fruit of this plant, eaten fresh or pickled.
- Any of several related or similar plants, such as the bur cucumber or the squirting cucumber.