lek2Pronunciation: /lɛk/Definition of lek noun a patch of ground used for communal display in the breeding season by the males of certain birds and mammals, especially black grouse. verb [no object] (usually as noun lekking) take part in a communal display on a lek: antelopes mate in lekking groundsOrigin: late 19th century: perhaps from Swedish leka 'to play'lek in other Oxford dictionaries Definition of lek in the US English dictionary