a person who dives as a competitive sport
a person who works or explores underwater for long periods, either carrying a supply of air in cylinders or having it sent from the surface
a large fish-eating diving bird that has its legs placed far back under its body and as a result has a clumsy floundering gait on land
any of several species of large fish-eating diving birds of the northern part of the northern hemisphere that have the legs placed far back under the body and as a result have a clumsy floundering gait on land: genus Gavia
any of various diving birds