Definition from Wiktionary, the free dictionary
baisemain m (plural baisemains)
- (historical) in feudalism, homage which the vassal used to give to the fief seigneur, by kissing his hand
- polite manner to greet or leave a lady, by kissing her hand, hand-kissing.
- À belles baisemains : f pl (archaic) With a great submission.