1. noun A female who is very interested in or devoted to an element of pop culture (such as a celebrity, athlete, book series, TV show, band, or movie). My sister is a total Supernatural fangirl—she never misses an episode and has even met the actors from the show!

2. verb To express excessive glee and excitement over a person or thing that one likes. As a verb, this phrase can be applied (derisively) to males. It's hard not to fangirl when one of your favorite actors is three feet away from you! My brother totally fangirled when he met his favorite football player—what a dork.