From Longman Dictionary of Contemporary Englishlady friendlady friendGIRLFRIEND/BOYFRIENDa woman that a man is having a romantic relationship with – often used humorously SYN girlfriend I saw Chris with his new lady friend. → lady
Examples from the Corpus
lady friend• Frank had given Terence's gramophone to a lady friend, and would he please not tell Mum?• They had hired two massive and attractive, expensive houses, and were accompanied by two attractive and expensive lady friends.• Michael Lamonte, according to his lady friend, was filming at Pinewood.• Henry had just come in with his new lady friend.• Henry had just come in with his new lady friend, Lila Sams.• There was something about Tom's lady friend that seemed familiar and yet Joe couldn't quite place her.• They tell their lady friends, and then all secrecy is lost.• You had two tables, the second one to accommodate your lady friends.• Bringing one of your lady friends? 