Your ears are the parts of your body you use for hearing. Your ears also help you keep your balance.
People have one ear on each side of their heads, and so do all animals, although some — like sea creatures — have ears that are completely internal, with no visible parts. If someone compliments you by saying, "Good ear," they mean that you're skilled at hearing or appreciating certain sounds, particularly music. A completely different kind of ear is an ear of corn, the part that holds the seeds or kernels.