the mind > emotion > love > kiss > [noun] > kiss with insertion of tongue > action of giving French kisses (5)
The action or practice of performing a French kiss or French kisses (chiefly in sense 2).
Originally U.S. A passionate kiss, typically involving contact between tongues. Cf. French kiss, n. 2.
U.S. slang. Amorous kissing, esp. at length and with contact between tongues; French kissing. Cf. slob, v. 5a.