Anagrams of: DALTONTRUMBO

• a lottery in which tickets are drawn from a revolving drum

• located away from the midline of a vessel or aircraft

• a motorboat with an outboard motor

• internal-combustion engine that mounts at stern of small boat

• open land usually with peaty soil covered with heather and bracken and moss

• a frame made of two hoops; used for embroidering

• a drum

• situated at the bottom or lowest position

• the lower side of anything

• the lowest part of anything

• the fleshy part of the human body that you sit on

• the second half of an inning; while the home team is at bat

• a depression forming the ground under a body of water

• low-lying alluvial land near a river

• a cargo ship

• the lowest rank

• provide with a bottom or a seat

• strike the ground, as with a ship's bottom

• come to understand

• someone who guards an entrance

• A stupid person.

• "Stupid person," by 1951, American English, from dumb. The Disney musical cartoon is from 1941; in it the elephant's name is a mocking nickname based on Jumbo.