"legs," 1781, low slang, probably the same word as gamb "leg of an animal on a coat of arms" (1727) and ultimately from Middle English gamb "leg," from Old North French (see gammon). Now, in American English slang, especially with reference to well-formed legs of pretty women, but this was not the original sense.
"a leg," 1781, see gams.
A social visit; party (1893+)
verb[origin unknown; perhaps fr nautical use, ''a meeting of whaling ships at sea, with attendant talk and exchange of news'' found by 1850; perhaps fr 18th-century gammon, ''talk, chatter''; probably ultimately fr Middle English gamon, ''to play, frolic'']
A leg, esp a woman's leg •Most often in the plural: regarding her superb gams with affection/ Gavilan has spindly gams, a thin neck, and a wasp waist
[1781+; perhaps fr Northern French gambe, ''leg'']