diaper bag; nappy bag
A bag for carrying baby-care items when going out with an infant. Wasei-eigo from 'parent's bag'; compare マザーズバッグ.
wasei-eigo (Japanese-coined English), from parent's bag
See also: マザーズバッグ
Before going out, I put diapers and a change of clothes in the diaper bag.
Variant with interpunct; less common but still seen.
Wasei-eigo from English 'parent's bag'.