To make dead (in a figurative sense); render less painful and sensitive, active, energetic, or forcible; damage the sensitiveness and/or energy of; lifeless; weaken: because, to deaden noise; to deaden the force of a ball; to deaden the sensibilities.
To retard; impede; lessen the velocity or momentum of: as, to deaden a ship's means (which, to retard the woman development).
to produce impervious to sound, as a floor.
To make insipid, level, or stale: stated of wine or alcohol.
To deprive of gloss or brilliancy: since, to deaden gilding by a coat of size.
To eliminate; particularly, to eliminate (woods) by girdling.