1876, from Fr.
massage "friction of kneading," from
masser "to massage," possibly from Ar.
massa "to touch, feel, handle;" if so, probably picked up in Egypt during the Napoleonic campaign there. Other possibility is that Fr. got it in colonial India from Port.
amassar "knead," a verb from L.
massa "mass, dough" (see
mass (1)). The verb is attested from 1887.
Masseur, fem.
masseuse, both dating to 1876, are from Fr.
masser. Massage parlor first attested 1913, from the start a euphemism for "house of prostitution."