Merriam-Webster Online Dictionary
girlfriend (noun)1.
a female friend
2.
a frequent or regular female companion in a romantic or sexual relationship
Merriam-Webster Online Thesaurus
girlfriend (noun)a female romantic companion
SYNONIMS:
gal, gill, girl, inamorata, lady, ladylove, old lady, womanRELATED WORDS:
mistress, moll; beloved, darling, dear, favorite, flame, honey, love, lover, significant other, sweet, sweetheart, valentine