- A dromedary has one - Bulge - Camel feature - Camel's protuberance - Camel’s protuberance - Lump on back - A protuberance; especially, the protuberance formed by a
crooked back.
- A type of Arabian camel - The Arabian camel (Camelus dromedarius), having one hump
or protuberance on the back, in distinction from the Bactrian camel,
which has two humps.