Retrocopulant
Pronunciation : Re`tro*cop"u*lant
Part of Speech : a.
Etymology : [See Retrocopulation.]
Definition : Defn: Copulating backward, or from behind.
Source : Webster's Unabridged Dictionary, 1913
Merriam-Webster's Everyday Language Reference Set: Includes: The Merriam-Webster Dictionary, The Merriam-Webster Thesaurus, and The Merriam-Webster Vocabulary Builder