(1):
(a.) To lessen the velocity or momentum of; to retard; as, to deaden a ship's headway.
(2):
(a.) To make vapid or spiritless; as, to deaden wine.
(3):
(a.) To deprive of gloss or brilliancy; to obscure; as, to deaden gilding by a coat of size.
(4):
(a.) To make as dead; to impair in vigor, force, activity, or sensation; to lessen the force or acuteness of; to blunt; as, to deaden the natural powers or feelings; to deaden a sound.
(5):
(v. t.) To render impervious to sound, as a wall or floor; to deafen.