Deaden

1. a. To deprive of gloss or brilliancy; to obscure; as, to deaden gilding by a coat of size.
2. 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.
3. a. To lessen the velocity or momentum of; to retard; as, to deaden a ship’s headway.
4. a. To make vapid or spiritless; as, to deaden wine.

The word meanings were obtained from OPTED(The Online Plain Text English Dictionary), which is based on “The Project Gutenberg Etext of Webster’s Unabridged Dictionary” which is in turn based on the 1913 US Webster’s Unabridged Dictionary (See Project Gutenburg), as a text file.