pho·to (f??t?) Informal n. pl. pho·tos A photograph.tr. & intr.v. pho·toed, pho·to·ing, pho·tos To photograph or take photographs.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.