1 [countable, uncountable] a yellow citrus fruit with a lot of sour juice. Slices of lemon and lemon juice are used in cooking and drinkslemon teaa gin and tonic with ice and lemonSqueeze the juice of half a lemon over the fish.a lemon tree
2 [uncountable] lemon juice or a drink made from lemon see also bitter lemon
3 (also lemon yellow) [uncountable] a pale yellow colour4 [countable] (informal, especially North American English) a thing that is useless because it does not work as it shouldSynonym
dud5 [countable] (British English) a stupid person


ˈlemən
ˈlemən