Kiss

to touch or press with the lips slightly pursed, and then often to part them and to emit a smacking sound, in an expression of affection, love, greeting, reverence, etc.:
He kissed his son on the cheek.
to join lips with in this way:
She kissed him and left.
to touch gently or lightly:
The breeze kissed her face.
to put, bring, take, etc., by, or as if by, kissing:
She kissed the baby’s tears away.
Billiards, Pool. (of a ball) to make slight contact with or brush (another ball).
to join lips in respect, affection, love, passion, etc.:
They kissed passionately.
to express a thought, feeling, etc., by a contact of the lips:
They kissed goodbye at the station.
to purse and then part the lips, emitting a smacking sound, as in kissing someone.
Billiards, Pool. (of a ball) to carom gently off or touch another ball.
an act or instance of kissing.
a slight touch or contact.
Billiards, Pool. the slight touch of one ball by another.
a baked confection of egg whites and confectioners’ sugar, served as a cookie.
a piece of toffeelike confectionery, sometimes containing nuts, coconut, or the like.
a small, sometimes conical, bite-size piece of chocolate, usually individually wrapped.
kiss off, Slang.

to reject, dismiss, or ignore:
He kissed off their objections with a wave of his hand.
(used to express contemptuous rejection or dismissal).
to give up, renounce, or dispense with:
Leaving Tulsa meant kissing off a promising job.

blow / throw a kiss, to indicate an intended kiss from a distance, usually in bidding farewell, by kissing one’s own fingertips and moving the hand toward the person greeted.
kiss ass, Slang: Vulgar. to be obsequious; fawn.
keep it simple, stupid.
Contemporary Examples

The Rock and Roll Hall of Fame Sucks! Jamie Reno April 11, 2012
The Political Power of Michael Sam’s Liplock With His Lover Tim Teeman May 16, 2014
Emmys 2013: Connie Britton Picks Her Favorite ‘Nashville’ Moments Connie Britton August 28, 2013
Is Jennifer Lawrence Going Stir Crazy From ‘Hunger Games’ Hype? Chris Lee March 22, 2012
13 Crazy, Dirty Modern Proverbs Fred R. Shapiro May 29, 2012

Historical Examples

Nell, of Shorne Mills Charles Garvice
Philothea Lydia Maria Child
Love Letters of Nathaniel Hawthorne, Volume 2 of 2 Nathaniel Hawthorne
The Spenders Harry Leon Wilson
The Social Cancer Jos Rizal

verb
(transitive) to touch with the lips or press the lips against as an expression of love, greeting, respect, etc
(intransitive) to join lips with another person in an act of love or desire
to touch (each other) lightly: their hands kissed
(billiards) (of balls) to touch (each other) lightly while moving
noun
the act of kissing; a caress with the lips related adjective oscular
a light touch
a small light sweet or cake, such as one made chiefly of egg white and sugar: coffee kisses
abbreviation
keep it simple, stupid
v.

Kissing, as an expression of affection or love, is unknown among many races, and in the history of mankind seems to be a late substitute for the more primitive rubbing of noses, sniffing, and licking. [Buck, p.1113]

Some languages make a distinction between the kiss of affection and that of erotic love (cf. Latin saviari “erotic kiss,” vs. osculum, literally “little mouth”). French embrasser “kiss,” but literally “embrace,” came about in 17c. when the older word baiser (from Latin basiare) acquired an obscene connotation. Insulting invitation kiss my ass is at least from 1705, but probably much older (cf. “The Miller’s Tale”).
n.
Keep it simple, stupid!