key Pronunciation: /kiː/Translate key | into French | into Italian | into Spanish German translation of keyA. n. 1 Schlüssel 2 (on piano, typewriter, computer, etc.) Taste 3 [Mus.] TonartB. v.t. [Comp.] eintastenkey in other Oxford dictionaries Definition of key in the British & World English dictionary Definition of key in the US English dictionary