noun plural but singular or plural in construction
: a chamber in a pipe organ in which the compressed air supplied by the blower is kept at a uniform pressure by means of weights or springs
noun plural but singular or plural in construction
: a chamber in a pipe organ in which the compressed air supplied by the blower is kept at a uniform pressure by means of weights or springs
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012