best girl

Noun

best girl (plural best girls)

1. (dated) One's girlfriend.
   • […] your fine magazine […] is a pleasure to read anywhere, but in an isolated spot such as this it's almost as good as a sugar report from the best girl!1954, Esquire, volume 41, number 2, page 12
   • Soon, you might think, a lone figure dressed in tails and a top-hat — Fred Astaire, or maybe Gene Kelly — would appear and dance his way from one of those spots to the next, singing about how lonely a fellow could be when his best girl had given him the air and all the bars were closed.1991, Stephen King, Needful Things
2. (film production) A woman who performs the duties of a best boy.
3. (Internet, slang) A reader or viewer's preferred female character.
   • Also: Miku is best girl, thank you for attending this TED Talk.2020 April 22, Will Harrison, “15 Anime To Watch If You Love Fruits Basket”, in CBR