I. sound ‧ proof 1 /ˈsaʊndpruːf/ BrE AmE adjective
a soundproof wall, room etc is one that sound cannot pass through or into
II. soundproof 2 BrE AmE verb [transitive]
to make something soundproof
I. sound ‧ proof 1 /ˈsaʊndpruːf/ BrE AmE adjective
a soundproof wall, room etc is one that sound cannot pass through or into
II. soundproof 2 BrE AmE verb [transitive]
to make something soundproof
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012