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fly - definition and synonyms


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noun [countable]     fly pronunciation in American English
Word Forms
  1. 1
    a common small insect with wings. Flies eat food, are often found near garbage, and are responsible for spreading many diseases

    A trapped fly buzzed against the window pane.

    a swarm/cloud/plague of flies:

    There were clouds of small flies over the river.

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  2. 2
    the opening at the front of a pair of pants that is fastened with buttons or a zipper. The British word is flies

    Your fly is open!

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a description of an economic or political situation based on analysis of information at the present time

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an unregulated form of capitalism that features financial deregulation, privatisation and low tax for high earners

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