fa·cial (f??sh?l)adj. Of or concerning the face: facial cosmetics; facial hair.n. A treatment for the face, usually consisting of a massage and the application of cosmetic creams.fa?cial·ly adv.American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.