late 14c., "walk heavily, stamp," from Middle Low German trampen "to stamp," from Proto-Germanic *tramp- (cf. Danish trampe, Swedish trampa "to tramp, stamp," Gothic ana-trimpan "to press upon"), probably from a variant of the Proto-Germanic source of trap. Related: Tramped; tramping.
"person who wanders about, vagabond," 1660s, from tramp (v). Sense of "steamship which takes cargo wherever it can be traded" (as opposed to one running a regular line) is attested from c.1880. The meaning "promiscuous woman" is from 1922.
A promiscuous woman; a harlot; Punchboard (1922+)