One who plays a game, especially a role-playing or computer game.(noun)
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 "gamer" in a sentence
"Part of this is a taxonomy problem-the term gamer connotes a certain type of adolescent, a definition that doesn't come close to capturing reality."
"All in all the term gamer is going to need a lot of work before it will be societally accepted as terms such as athlete and student."
"If you're a video game fan out there, this is the time of year when you're getting what we call gamer's thumb."