DUN

I. adjective see: dusk Date: before 12th century 1. having the color ~, having a grayish-yellow coat with black mane and tail, marked by dullness and drabness, ~ness noun II. noun Date: 14th century a ~ horse, a variable color averaging a nearly neutral slightly brownish dark gray, a subadult mayfly, III. transitive verb (~ned; ~ning) Etymology: origin unknown Date: circa 1626 to make persistent demands upon for payment, plague , pester , IV. noun Date: 1628 a person who ~s, an urgent request