DICT.TW Dictionary Taiwan

 Deaf·en v. t. [imp. & p. p. Deafened p. pr. & vb. n. Deafening.]
 1. To make deaf; to deprive of the power of hearing; to render incapable of perceiving sounds distinctly.
    Deafened and stunned with their promiscuous cries.   --Addison.
 2. Arch. To render impervious to sound, as a partition or floor, by filling the space within with mortar, by lining with paper, etc.
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 deafened
      adj : caused to hear poorly or not at all