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[dextrous]

what's always puzzled me .................why is drinking water called 'potable'?

adj.
Fit to drink.

n.
A beverage, especially an alcoholic beverage: wine and other potables.

[Middle English, from Old French, from Late Latin pōtābilis, from Latin pōtāre, to drink, from pōtus, a drink.]

Plus:
**** (v.)

c.1290, from O.Fr. ****ier "urinate" (12c.), from V.L. *****iare, of imitative origin. As a pure intensifier (cf. ****-poor, ****-ugly, etc.) it dates from World War II. ****ed off "angry, fed up" is 1946, U.S. slang. To **** off "go away" is attested from 1958, chiefly British. **** and vinegar first attested 1942. ****-prophet "one who diagnosed diseases by inspection of urine" is attested from 1625. **** proud "erect upon awakening" is attested from 1796.

Hence **** pot