Rough, coarse, or unkempt; thick, rough, and irregular.Rough; covered with long coarse or bushy hair, or with something resembling it.In botany, pubescent or downy with long and soft hairs; villous.In embryology, villous: noting specifically that part of the chorion which develops long villous processes, and thus enters into the formation of the placenta, the rest of the chorion remaining smooth.