In a position so that the face is down: a victim floating face-down in the water. (adverb)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "face-down" in a sentence
"MSNBC reported that Wendell Noyes was taken by ambulance after repeatedly laying down in the family's driveway and rolling around, and video showed him dropping to his knees in the driveway and then laying face-down, with his head resting on his hands."
"Note that the facts of the case show that Grant was cuffed and face-down when he was shot."
"Grant was lying face-down, with both hands behind his back, when Mehserle shot him, Oakland police investigators said."