Webster’s Revised Unabridged Dictionary · 1913
Batman
Bat′man (băt′măn), n. [Turk. baṭman.] A weight used in the East, varying according to the locality; in Turkey, the greater batman is about 157 pounds, the lesser only a fourth of this; at Aleppo and Smyrna, the batman is 17 pounds. Simmonds.
Bat′man (ba̤′man or băt′man), n.; pl. Batmen (-men). [F. bât packsaddle + E. man. Cf. Bathorse.] A man who has charge of a bathorse and his load. Macaulay.