What is the meaning of Caboose?

A small galley or cookhouse on the deck of a small vessel.

A small sand-filled container used as an oven on board ship.

The last car on a freight train, having cooking and sleeping facilities for the crew; a guard’s van.

The buttocks.

The person or team in last place.

A youngest child who is born after a long gap in time.

Source: wiktionary.org