1. engaging in or talking enthusiastically about technical, scientific, or specialized interests
Usage: informal; present participle of 'geek'
2. using or being under the influence of drugs, especially methamphetamine
Usage: slang; vulgar; present participle of 'geek'

Examples

• He's been geeking about the new video game all week.
• They were geeking out over the latest smartphone release.
• She loves geeking about science fiction novels with her friends.
• The tech enthusiasts were geeking during the conference.
• He's always geeking about programming languages and software development.