1. a breathing tube that allows a swimmer to breathe while floating face down on the water surface
2. a retractable air intake tube on a submarine that allows it to operate diesel engines while submerged
Usage: nautical

1. to swim using a schnorkel

Examples

• She put on her mask and schnorkel before entering the coral reef.
• The submarine raised its schnorkel to draw in fresh air.
• We decided to schnorkel in the clear blue waters of the Caribbean.
• His new schnorkel had a dry top to prevent water from entering.
• The captain ordered the crew to extend the schnorkel.
• They spent the afternoon schnorkeling around the shipwreck.