noun
: a large dark-brown fly ( Pollenia rudis ) related to the bluebottles and often gathering in large clusters in attics and other sheltered places during cool autumn weather
noun
: a large dark-brown fly ( Pollenia rudis ) related to the bluebottles and often gathering in large clusters in attics and other sheltered places during cool autumn weather
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012