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fly [ˈflaɪ]

1 fly verb
  • to move through the air with wings
  • to move through the air especially at a high speed —often used figuratively
  • to control an airplane, helicopter, etc., as it moves through the air : to be the pilot of an aircraft
2 fly verb
  • to hit a fly ball
3 fly noun
  • a small insect that has two wings
  • a hook that is designed to look like an insect and that is used for catching fish
4 fly noun
  • an opening in a piece of clothing (such as a pair of trousers, shorts, or a skirt) that is hidden by a fold of cloth and that is closed by a zipper or a row of buttons —sometimes plural in British English
  • fly ball