doggy style

Short definition from Wiktionary

Adverb

1. 1
   In a position whereby one partner is on all fours and the other partner is penetrating from behind.

Noun

1. 1
   The position assumed for doggy style intercourse.
2. 2
   Alternative spelling of doggy style.

Adjective

1. 1
   With one partner on all fours and the other penetrating from behind.

Verb

1. 1
   To have sex doggystyle