Your browser does not seem to support JavaScript. As a result, your viewing experience will be diminished, and you have been placed in read-only mode.
Please download a browser that supports JavaScript, or enable it if it's disabled (i.e. NoScript).
The sport or activity of diving under water without the use of breathing apparatus, especially in deep water.
the activity or sport of swimming as deep as you can under water without using breathing equipment:
Share your knowledge with the community
Browse our collection of 300,000+ community-written definitions
