swim 
(swĭm)
(swĭm)v. swam (swăm), swum (swŭm), swim·ming, swims
v.intr.
1.
a. To move through or on top of water by moving the limbs, fins, or tail or by undulating the body: Ducks swam in the pond.
b. To play or relax in water: The children went swimming in the surf.
2. To float on water or another liquid: Suds swam on the surface of the dishwater.
3.
a. To be covered or flooded with a liquid: chicken swimming in gravy.
b. To possess a superfluity; abound: After winning the lottery, she was swimming in money.
4. To experience a floating or giddy sensation; be dizzy: "his brain still swimming with the effects of the last night's champagne" (Robert Smith Surtees).
5. To appear to float or spin slowly: The room swam before my eyes.
v.tr.
1. To move through or across (a body of water or a distance) by swimming: She swam the channel. I swam 10 laps.
2. To execute (a particular stroke) in swimming.
n.
1.
a. The act of swimming: went for a swim before lunch.
b. A distance covered by or period of time spent swimming.
2. An area, as of a river, abounding in fish.
adj.
Idioms: Of, relating to, or used for swimming: a swim mask.
in the swim
Active in the general current of affairs.
swim against the stream
To move counter to a prevailing trend.
[Middle English swimmen, from Old English swimman.]
swimma·ble adj.
swimmer n.