Deaf"en (?), v. t. [imp. & p. p. Deafened (?); p. pr. & vb. n. Deafening.] [From Deaf.]
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.
© Webster 1913.