n.
Function: noun
Date: 15th century
1 : a book that is conveniently handled especially : HANDBOOK <an instruction manual >
2 : the prescribed movements in the handling of a weapon or other military item during a drill or ceremony <the manual of arms>
3 a : a keyboard for the hands specifically : one of the several keyboards of an organ or harpsichord that controls a separate division of the instrument b : a device or apparatus intended for manual operation