Waterskin

A waterskin is a receptacle used to hold water. Normally made of a sheep or cow bladder, it retains water naturally and therefore was very useful in desert crossings up until the invention of the canteen. It is still used in some developing nations. Though it may have been used over 5000 years ago by tribal peoples, the first pictures of it are fr...
Found on http://en.wikipedia.org/wiki/Waterskin

waterskin

[n] - a container of skin for holding water
Found on http://www.webdictionary.co.uk/definition.php?query=waterskin

waterskin

water skin noun a container of skin for holding water
Found on https://www.encyclo.co.uk/local/20974
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