1. people who are very interested in and knowledgeable about computers, technology, or other specialized subjects
Usage: informal
2. people who are socially awkward or unfashionable
Usage: informal; sometimes derogatory

Examples

• The computer geeks at school helped fix the network problem.
• She’s one of those science geeks who loves doing experiments.
• The gaming geeks spent all weekend playing their new video game.
• Many former geeks now work at successful tech companies.
• Comic book geeks lined up for hours to meet their favorite artist.
• The math geeks formed their own study group.