standbybag

noun
UK /ˈstændbaɪ bæɡ/
US /ˈstændbaɪ bæɡ/

A standby bag is a bag you keep ready to grab when you need it fast.

She packed a standby bag with snacks and a book for the long car ride.


OTHER MEANINGS

2. A small bag kept packed with spare clothes and essentials in case of a sudden trip.

He always keeps a standby bag in the trunk for overnight stays.

3. A backup bag carried in addition to the main luggage.

My standby bag holds chargers and a change of socks.

4. In travel, a bag held ready in case a passenger's checked luggage is delayed.

The airline gave her a standby bag with toiletries after her suitcase went missing.