Meaning

adjective (of a woman's body) having a large bosom and pleasing curves

adjective (of a female body) healthily plump and vigorous ; - Robt.A.Hamilton

originFrom Middle English buxom, also ibucsum, ibuhsum (“bendsome, flexible, pliant, obedient”), from Old English bōcsum, *būhsum, *ġebūhsum (“bendsome, pliant, obedient”), from Proto-West Germanic *beuhsam, *beugsam, equivalent to bow (“to bend, bow at the waist”) + -some or buck (“to bend, buckle, kick”) + -some. Cognate with Scots bowsome (“compliant”), West Frisian bûgsum (“flexible, bendy”), Dutch…

Etymology from Wiktionary, CC BY-SA 3.0