- The definition of a brook is a small stream.
An example of a brook is a small flow of water along a wooded path.
A brook in the woods.Licensed from iStockPhoto
Origin: Middle English brok ; from Old English broc; akin to Old High German bruoh, moor, swamp ; from uncertain or unknown; perhaps
Origin: Middle English brouken, to use, enjoy ; from Old English brucan; akin to German brauchen: for Indo-European base see fruit
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noun Chiefly Northeastern U.S.
Origin: Middle English, from Old English brōc.
transitive verb brooked, brook·ing, brooks
Origin: Middle English brouken, from Old English brūcan, to use, enjoy.