“+ə(r) noun
: any device on a bookkeeping or other office machine that crossfoots ; specifically : the key that actuates this operation on the machine or the device that registers or makes visible the result
“+ə(r) noun
: any device on a bookkeeping or other office machine that crossfoots ; specifically : the key that actuates this operation on the machine or the device that registers or makes visible the result
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012