checked baggage
Formal term used in airports and travel contexts for luggage that is checked in and transported in the cargo hold.
Please check your baggage at the counter.
Check the weight limit for checked baggage.
手荷物 is a general term for hand luggage or carry-on baggage, while 受託手荷物 specifically refers to checked baggage.
機内持ち込み手荷物 means carry-on baggage, the opposite of 受託手荷物.
Compound of 受託 (じゅたく, 'entrusting') and 手荷物 (てにもつ, 'hand luggage'). The exact historical derivation is uncertain; the term is a modern coinage for air travel.