Definitions
1.NounA female partner in an unmarried romantic relationship."Marc went to the park with his girlfriend and watched the sunset with her.; I was playing the acoustic guitar and my girlfriend was playing the drums."
2.NounA female friend of a woman or girl."Mary always enjoyed hanging out with her girlfriend Jessica."
3.NounA fellow gay man, especially a friend as opposed to a sexual partner.
4.NounA term of address for a female friend or among gay men.
5.VerbTo be a girlfriend to (someone).
6.VerbTo have (someone) as a girlfriend.