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onion fly

noun
  1. a small grey dipterous insect, Delia antiqua, that is a serious pest of onions. The larvae destroy the bulbs
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Examples from the Web for onion fly

Historical Examples of onion fly

  • It might be, continued the latter kindly, that youve been bitten by the Diptera onionensis, otherwise known as the onion-fly.

    Left Half Harmon

    Ralph Henry Barbour