maid-in-waiting

[ meyd-in-wey-ting ]
/ ˈmeɪd ɪnˈweɪ tɪŋ /

noun, plural maids-in-wait·ing.

an unmarried woman who serves as an attendant to a queen or princess; lady-in-waiting.

Origin of maid-in-waiting

First recorded in 1950–55