noun
: a timber roof of which the constructional parts together with the under side of the covering or its lining are treated ornamentally and left to form the ceiling of an apartment below
noun
: a timber roof of which the constructional parts together with the under side of the covering or its lining are treated ornamentally and left to form the ceiling of an apartment below
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012