One of the mysteries of the English language finally explained.
A child's suit or outfit that resembles the attire of the comic strip character Buster Brown; = "Buster Brown suit". Now: specifically an outfit for a baby or young child, usually consisting of a top and a pair of short trousers fastened together with buttons.
Early 20th century; earliest use found in Logansport (Indiana) Pharos. From the name of BusterBrown + suit.
buster suit/ˈbʌstə ˌs(j)uːt/
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