Also found in: Dictionary, Thesaurus, Acronyms, Encyclopedia, Wikipedia.
1. Literally, an activity that a student does in addition to their studies. With your grades and extracurricular activities, you'll get into any college you want.
2. slang Sexual activity, often that which is clandestine. If Jen didn't come home last night, I bet she and Bill were preoccupied with some extracurricular activities, if you know what I mean.
See also: activity