the apparent temperature felt on the exposed human body owing to the combination of temperature and wind speed.
Origin of wind chill
First recorded in 1945–50
Also called wind·chill factor [wind-chil, win-,] /ˈwɪndˌtʃɪl ˌfæk tər, ˈwɪn-,/ wind·chill in·dex [wind-chil in-deks, win-] /ˈwɪndˌtʃɪl ˌɪn dɛks, ˈwɪn-/, chill factor.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019