[ad. Ger. klaviatur, repr. L. type *clāviatūra, f. clāvis key: cf. OF. claveüre.] The key-board of an organ or pianoforte.
1882–3. Schaff, Encycl. Rel. Knowl., II. 1702. The pedal claviature was not invented until the beginning of the fifteenth century.
