1. lacking a rump or tail; having no hindquarters or posterior end
Usage: often used to describe certain breeds of chickens or other animals

Examples

• The rumpless chicken breed is known for its distinctive appearance.
• Some rumpless birds have a genetic mutation that prevents tail development.
• The farmer specialized in raising rumpless Araucana chickens.
• Rumpless varieties of poultry are less common than their tailed counterparts.
• The rumpless gene is recessive in most chicken breeds.