Trachea is another name for windpipe, which is the tube that connects your larynx to your primary bronchi, just before your lungs. You can't breathe without your trachea.
The word trachea is from the Greek phrase for windpipe — trakheia arteria, which literally meant "rough artery." The trachea is formed from rings of cartilage, which give the trachea its rough appearance. If you can't breathe, you may need a tracheotomy, which is a procedure in which the doctor makes an incision and then places a tube in your trachea below the obstruction so you can still take air into your lungs.