Necking

Verb

1. Present participle of neck

Full definition of necking

Noun

1. A behavior among male giraffes where they hold combat for social dominance using their necks as weapons.
• 2005, Barbara Keevil Parker, Giraffes, page 26:Necking helps young male giraffes test which one has a stronger neck.
2. (architecture) A neckmould.
3. (slang) Chugging beer.for Lent, he gave up necking and cigarettes