batman
Concise Oxford English Dictionary © 2008 Oxford University Press:
batman /ˈbatmən/ (or batwoman)
▶noun (pl. batmen or batwomen) dated (in the British armed forces) an officer's personal servant.
– origin C18 (orig. denoting an orderly in charge of the bat horse which carried the officer's baggage): from OFr. bat (from med. L. bastum ‘packsaddle’) + man.
'batman' also found in these Oxford entries:
