Definition of coxswainless in English:

coxswainless

Pronunciation /ˈkɒksnləs/

adjective

Rowing
  • Designating a rowing crew or racing boat with no coxswain; designating a rowing race for boats without a coxswain.

    Now much less common than coxless.

Origin

Mid 19th century; earliest use found in Baily's Monthly Magazine of Sports and Pastimes. From coxswain + -less.