A more quaint term for girlfriend, often used ironically.(noun)
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Use "lady friend" in a sentence
"In fact, Troy rarely stayed there, spending a lot of his time with a special lady friend who was well on her way to becoming the next female Johnnie Cochran."
"Nothing much happened, till August 1940, when he put it up to me that it might be worth my while to come over here with a letter from him to a lady friend of his, a Mrs. Arthur Rubrick M.P., who was keen on English servants."
"He had been discharging his duties as clerk of session as usual, and received in the afternoon a visit from a lady friend of his, Miss Young, who was submitting to him some manuscript memoirs of her father, when the stroke came."