noun

• Something or someone who makes a sound.
• An instrument used in telegraphy in place of a register, the communications being read by sound.
• (medicine, dated, plural only) A stethoscope.
• (nautical) A device for making soundings at sea.
• (nautical) A person who takes soundings.
• (fishing) A fishfinder.
• A group of wild boar.
• A young boar.