Meaning of KEYBOARD in English

[key.board] n (1819) 1: a bank of keys on a musical instrument (as a piano) that usu. consists of seven white and five raised black keys to the octave

2: an assemblage of systematically arranged keys by which a machine or device is operated

3: a board on which keys for locks are hung

[2]keyboard vt (1961): to capture or set (as data or text) by means of a keyboard ~ vi: to operate a machine (as for typesetting) by means of a keyboard -- n

Merriam-Webster English vocab.      Английский словарь Merriam Webster.