SWIMMER
swimmer, natator, bather
(noun) a person who travels through the water by swimming; “he is not a good swimmer”
swimmer
(noun) a trained athlete who participates in swimming meets; “he was an Olympic swimmer”
Source: WordNet® 3.1
Etymology
Noun
swimmer (plural swimmers)
One who swims.
A protuberance on the leg of a horse.
A webfooted aquatic bird.
(chiefly, in the plural, colloquial) A sperm.
(UK, informal) A Norfolk dumpling.
Source: Wiktionary
Swim"mer, n.
1. One who swims.
2. (Far.)
Definition: A protuberance on the leg of a horse.
3. (Zoöl.)
Definition: A swimming bird; one of the natatores. Little swimmer (Zoöl.),
a phalarope.
Source: Webster’s Unabridged Dictionary 1913 Edition