American Dictionary
Definition fly in American English
fly
noun
What are red words?
Around 90% of spoken and written English relies on just 7,500 common words.
These words are highlighted in red and are ranked using a star system.
- One-star words are commonly used
- Two-star words are even more common
- Three-star words are the most frequently used
[countable]
noun
What are red words?
Around 90% of spoken and written English relies on just 7,500 common words.These words are highlighted in red and are ranked using a star system.
- One-star words are commonly used
- Two-star words are even more common
- Three-star words are the most frequently used
/flaɪ/
1
a common small insect with wings. Flies eat food, are often found near garbage, and are responsible for spreading many diseases
Example
a new spray to kill flies and mosquitoes
2
the opening at the front of a pair of pants that is fastened with buttons or a zipper. The British word is flies
Example
Your fly is open!

Related Words
Words related to fly:
a fly in the ointment (phrase)
be a fly on the wall (phrase)
crane fly (noun)
drink-fly limit (noun)
fly (verb)
fly (noun)
fly agaric (noun)
fly at (phrasal verb)
fly ball (noun)
fly fishing (noun)
fly grazer (noun)
fly grazing (noun)
fly half (noun)
fly in the face of something (phrase)
fly into a (phrase)
fly off the handle (phrase)
fly standby (phrase)
fly-by (noun)
fly-by-night (adjective)
fly-by-wire (noun)
fruit fly (noun)
the nest (phrase)
let fly (phrase)
make the dust fly (phrase)
no fly list (noun)
no-fly list (noun)
no-fly zone (noun)
on the fly (phrase)
pop fly (noun)
sand fly (noun)
the flag (phrase)
someone wouldn’t hurt a fly (phrase)
sparks fly (phrase)
the fur starts to fly (phrase)
tsetse fly (noun)
tzetze fly ()
when pigs fly (phrase)