Batman
来自Big Physics
mid 18th century (originally denoting an orderly in charge of the bat horse ‘packhorse’ which carried the officer's baggage): from Old French bat (from medieval Latin bastum ‘packsaddle’) + man.
wiktionary
From bat(“ packsaddle”) + man. The element bat is from French bât, from Old French bast, [1] from Late Latin bastum, possibly from Ancient Greek βαστάζειν(bastázein, “to bear, carry, lift”).
From Ottoman Turkish بطمان (batman). Cognate with Chagatai[script needed](bātmān).
In reference to the superhero Batman.
etymonline
batman (n.)
"officer's servant," originally military title for "man in charge of a bat-horse and its load," 1755, from bat "pack-saddle" (late 14c.), from Old French bast (Modern French bât), from Late Latin bastum (see baton). Hence also batwoman (1941). The comic book hero dates from 1939.