plural windchills
chiefly US
1
: the effect that wind has of making air feel colder than it actually is
It's cold outside, and it feels even colder because of the windchill.
called also windchill factor
2
: a temperature that shows how cold the air feels because of the wind
Expect windchills in the 20s tonight.
Cite this Entry
“Windchill.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/windchill. Accessed 16 Apr. 2026.
Copy Citation
