IPA: /ˈwɪndˌpaɪp/
KK: /wɪndˌpaɪp/
The windpipe is a tube that carries air from the throat to the lungs, also known as the trachea.
When you breathe in, air travels down your windpipe into your lungs.
Windpipe → The word is formed from "wind" (from Old English "wind", meaning air in motion) and "pipe" (from Old English "pīpe", meaning a tubular structure). The term "windpipe" refers to the tubular structure that carries air to and from the lungs.
Think of 'wind' as the air moving through a 'pipe' — that's why the windpipe is the tube that carries air.