cos·set I. \ˈkäsə̇t, usu -d.+V\noun (-s) Etymology: origin unknown : a lamb reared without the aid of the dam : a pet lamb : pet II. transitive verb (-ed/-ing/-s) : to treat as a pet : fondle, pamper, coddle < my complaint is that my life is too cosseted and padded — John Buchan > < one who cosseted his health — Joyce Cary >