A gamer is a person who plays interactive games, especially video games, tabletop role-playing games, and skill-based card games, and who plays for usually long periods of time. Some gamers are competitive, meaning that they compete in some games for money. There are many different gamer communities around the world.

adjective. In-house work or activities are done by employees of an organization or company, rather than by workers outside the organization or company. A lot of companies do in-house training.