[adverb feys-doun; noun feys-doun]
  1. with the face or the front or upper surface downward: He was lying facedown on the floor. Deal the cards facedown on the table.
  1. Also face-down. Informal. a direct confrontation; showdown.

Origin of facedown

1930–35; (def 1) face + down1; (def 2) noun use of verb phrase face down
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for facedown

Contemporary Examples of facedown