means The trachea is the windpipe — the rigid tube running from your larynx down to your bronchi that carries air to and from your lungs.

from From Late Latin trachea, borrowed from Greek tracheia, short for tracheia arteria, 'rough artery' — the ancients called it 'rough' (tracheia) because of those bumpy cartilage rings, distinguishing it from the smooth blood vessels. In their anatomy, 'arteria' originally meant any of these air-carrying tubes, since they believed such vessels held air rather than blood — a misunderstanding fossilized in the name.