Dictionary.com
definitions

bukkake

[boo-kah-kee -kak-ee]
noun
  1. a sexual practice that involves a group of men ejaculating on one person, usually a woman.

Origin of bukkake

1985–90; < Japanese: big splash < bukkakeru to splash (water)
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for bukkake

bukkake

noun
  1. a sexual practice in which several men ejaculate on the face of an individual woman

Word Origin for bukkake

C21: Japanese bukkakeru to dash (water)
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012