cucumber
cu‧cum‧ber /ˈkjuːkʌmbə $ -ər/
noun [uncountable and countable]
a long thin round vegetable with a dark green skin and a light green inside, usually eaten raw ⇨ cool as a cucumber at cool1(3)
cu‧cum‧ber /ˈkjuːkʌmbə $ -ər/
noun [uncountable and countable] Date: 1300-1400
Language: Old French
Origin: cocombre, from Latin cucumis
Language: Old French
Origin: cocombre, from Latin cucumis

a long thin round vegetable with a dark green skin and a light green inside, usually eaten raw ⇨ cool as a cucumber at cool1(3)