아기들이 입는 상하의가 하나로 연결되어 있고 가랑이 사이에 단추가 달린 가벼운 옷.
An infant's one-piece close-fitting lightweight garment, usually having sleeves but leaving the legs uncovered and fastening with snaps at the crotch.
예문:
"The newborn looked adorable in his striped cotton onesie."
"She bought a pack of three white onesies for the baby shower gift."
"It's easy to change a diaper when the baby is wearing a onesie with snaps."