old girl

American  

noun

1. Chiefly British. a former student at a girl's school, especially a preparatory school.

2. (used in informal direct address to a woman.)

3. a lively elderly woman.

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old girl British  

noun

1. (sometimes capitals) a female ex-pupil of a school

2. informal

   1. a familiar name used to refer to a woman

   2. an old woman

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Example Sentences

The mother of a seven‑year‑old girl living with a rare genetic condition has shared her hopes that this Christmas will finally be spent at home, after years of festive seasons in hospital.

From BBC

“When it comes to the supernatural, Madame Ionesco is as reliable as they come. I realize that’s not saying much. But I think the old girl can pull it off,” Simon declared.

From Literature

“And two rhymes this time! Penny old girl, you have outdone yourself.”

From Literature

The admiral emerged from the tent and began to walk into the woods, calling, “Here, Bertha old girl. Come to Fawsy. I have wittle ostrich tweats for you!”

From Literature

A 5-year old girl is missing and her father is dead after they were swept into the ocean by a wave at Garrapata State Park along the Big Sur coast, according to authorities.

From Los Angeles Times