OS nappy
In real, traceable use. Part of the curated seed collection; community review is coming.
Meaning · English
Abbreviation of one-size nappy.
Register: slang
Where it’s used:
Used
American English
Examples
I liked them enough to buy a set of Version Three Bumgenius OS nappies for DS. What a mistake..he outgrew them at 5 months old !!! So I had to buy some MEOS and wraps for day time use and Quick Flip nappies for night, both of which have a bit of growing space for my baby boy.
Usage example from English Wiktionary (CC BY-SA 4.0, retrieved 2026-07-30)
Sources & notes
Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-07-30 via kaikki.org).
Common questions
What does “OS nappy” mean?
Abbreviation of one-size nappy.
Is “OS nappy” formal or informal?
OS nappy is generally slang.