Definition of cluster fly in English:

cluster fly

Syllabification: clus·ter fly

noun

  • A fly that often enters buildings in large numbers during the autumn while looking for a place to overwinter.
    • Pollenia rudis (family Calliphoridae), whose larvae parasitize earthworms, and the smaller Thaumatomyia notata (family Chloropidae)
    More example sentences
    • Bluebottles and cluster flies are disgusting little creatures, feeding off rotting food and excrement.
    • Face flies and two or three species of cluster flies are often found in large clusters in the same overwintering site.
    • Of course, spring is a good time to find earthworms, so the cluster fly is active during this season.

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Word of the day milord
Pronunciation: mɪˈlɔːd
noun
used to address an English nobleman