Hold luggage is the bags stored beneath the cabin. Check in hold luggage, pay for hold luggage, no hold luggage at all.
The hold is unheated but pressurised on passenger aircraft, which is why pets can travel there. Travelling without hold luggage saves both money and half an hour at the other end.
1nounhold luggageThe bags stored beneath the cabin.
“Hold luggage now costs more than the seat did.”
hold luggage is luggage.
Also accepted in games: checked baggage
Practised in Airport & Flying