From Longman Dictionary of Contemporary Englishbluebottleblue‧bot‧tle /ˈbluːˌbɒtl $ -ˌbɑːtl/ noun [countable] British English HBIa large blue fly
Examples from the Corpus
bluebottle• Squashing a bad girl is like trying to squash a bluebottle.• I've just swallowed a bluebottle!• Big bluebottle flies were already buzzing around their wounds; it was very quiet here, and that was the only sound.• One great bluebottle circled his head, ignoring his efforts to brush it away.• He caught a six pound bluebottle!• The bluebottle swung away as though surprised to find space again. 