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.