"necking" in the noun sense
1. gorgerin, necking
the molding at the top of a column
2. caressing, cuddling, fondling, hugging, kissing, necking, petting, smooching, snuggling
affectionate play (or foreplay without contact with the genital organs)
"necking" in the verb sense
1. neck, make out
kiss, embrace, or fondle with sexual passion
"The couple were necking in the back seat of the car"
Source: WordNet® (An amazing lexical database of English)
Princeton University "About WordNet®."
WordNet®. Princeton University. 2010.
View WordNet® License