infant seat with a guard bar (in restrooms, etc.)
A wasei-eigo term for a wall-mounted or fold-down infant seat with a safety bar, commonly found in public restrooms so a parent can secure a baby while using the facilities.
wasei-eigo (Japanese-coined English), from baby keep
When a baby keep is installed in the restroom, it's reassuring even with a baby.
I sat my child in the baby keep and washed my hands.