kiss

from The American Heritage® Dictionary of the English Language, 5th Edition.

• intransitive verb To touch or caress with the lips as an expression of affection, greeting, respect, or amorousness.
• intransitive verb To touch lightly or gently.
• intransitive verb To strike lightly; brush against.
• intransitive verb To engage in mutual touching or caressing with the lips.
• intransitive verb To come into light contact.
• noun A caress or touch with the lips.
• noun A slight or gentle touch.
• noun A small piece of candy, especially of chocolate.
• noun A drop cookie made of egg whites and sugar.
• idiom (kiss ass) To act submissively or obsequiously in order to gain favor.
• idiom Informal (kiss goodbye) To be forced to regard as lost, ruined, or hopeless.

from The Century Dictionary.

• To smack with the pursed lips (a compression of the closed cavity of the mouth by the cheeks giving a slight sound when the rounded contact of the lips with one another is broken); press one's lips to, or touch with the lips, as a mark of affection or reverence, or as a conventional salutation; salute or caress with the lips: as, to kiss the Bible in taking an oath; to kiss a lady's hand; to kiss one on the cheek; they kissed each other.
• To touch gently, as if with fondness; impinge upon softly.
• Hence To touch slightly, as one ball another, in billiards and other games.
• To salute with the lips mutually, especially as a token of affection, friendship, or respect: as, to kiss and part.
• To meet with a gentle touch or impact; meet; just come iu contact.
• noun A salute or caress given by smacking with the lips. See kiss, v. t., 1.
• noun A confection, usually made of whites of eggs and powdered sugar, mixed, and baked in an oven, A sugar-plum or candied confection made of pulled sugar and variously colored and flavored.
• noun plural Same as kiss-me.
• noun A very slight, glancing touch.
• noun A small drop of sealing-wax accidentally let fall upon a letter near the seal.

from the GNU version of the Collaborative International Dictionary of English.

• intransitive verb To make or give salutation with the lips in token of love, respect, etc..
• intransitive verb To meet; to come in contact; to touch fondly.
• intransitive verb [Obs or Prov. End.] a perfumed sugarplum to sweeten the breath.
• transitive verb To salute with the lips, as a mark of affection, reverence, submission, forgiveness, etc.
• transitive verb To touch gently, as if fondly or caressingly.
• noun A salutation with the lips, as a token of affection, respect, etc.
• noun A small piece of confectionery.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• verb transitive To touch with the lips or press the lips against, usually to express love or affection or passion, or as part of a greeting, or as part of sexual activity.
• verb transitive To touch lightly or slightly.
• verb intransitive Of two or more people, to touch each other's lips together, usually to express love or affection or passion.
• verb transitive To mark a cross (X) after one's name on a card, etc.
• noun A touch with the lips, usually to express love or affection, or as a greeting.
• noun A type of filled chocolate candy, shaped as if someone had kissed the top. See Hershey's Kisses.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun any of several bite-sized candies
• noun a cookie made of egg whites and sugar
• verb touch with the lips or press the lips (against someone's mouth or other body part) as an expression of love, greeting, etc.
• noun a light glancing touch
• verb touch lightly or gently
• noun the act of caressing with the lips (or an instance thereof)