wa‧ter‧hole /ˈwɔːtəhəʊl $ ˈwɒːtərhoʊl, ˈwɑː-/ noun [countable]
a small area of water in a dry country where wild animals drink

[TahlilGaran] Dictionary of Contemporary English ▲

lake a large area of water surrounded by land:
Lake Michigan
We went for a swim in the lake.
lagoon an area of water that is separated from the sea by rocks, sand, or coral:
a tropical lagoon
coastal lagoons
loch in Scotland, a lake or an area of sea water that is almost completely surrounded by land:
Loch Ness
a sea loch
reservoir a lake, especially an artificial one, where water is stored before it is supplied to people's houses:
The reservoirs supply water to Greater Manchester.
pond a small area of fresh water that is smaller than a lake, which is either natural or artificially made:
There were several ducks on the village pond.
pool a small area of still water in a hollow place:
a pool of water near the summit of the mountain
a rockpool (=a pool in some rocks near the sea)
puddle a very small area of water on the ground, especially after it has been raining:
She turned quickly to avoid stepping in a puddle.
waterhole a small area of water in a dry country, where wild animals go to drink:
The waterhole is used by elephants.

[TahlilGaran] English Thesaurus ▲