The story
Extension from all-in-one diaper; compare all-in-one.
Etymology from Wiktionary, CC BY-SA 4.0.
Today it means: A type of cloth diaper, similar to a pocket diaper, that has a waterproof exterior and absorbent pad which is snapped inside of it, thereby consisting of two pieces. Full definition →
Extension from all-in-one diaper; compare all-in-one.
Etymology from Wiktionary, CC BY-SA 4.0.