IPA: /ˈrʌmpləs/
KK: /ˈrʌmpləs/
Having no rump or tail; lacking the rear part of the body that is typically present in animals.
The rumpless chicken is a unique breed that has no tail feathers.
Rumpless → It is formed from "rum" (from Old English *rum*, meaning having a rounded or protruding shape) and "-less" (meaning without). The word "rumpless" describes something that lacks a rounded or protruding part, often referring to animals without a tail.
Think of something that is 'without' ('-less') a rounded shape ('rum') — that's why rumpless means lacking a tail.