Etymology: (1825–35; < F: lit., comber, i.e., something worn while one's hair is being combed =peign(er) to comb (< LL pectināre; see pecten ) +-oir < L -ōrium -ory1)
Definition of 'peignoir'
Princeton's WordNet
1. (noun)negligee, neglige, peignoir, wrapper, housecoat a loose dressing gown for women