Definition of persicaria
1 plural -s : a plant of the genus Polygonum that has flowers in spicate racemes (as the lady's thumb or water pepper)
2 capitalized [New Latin, from Latin] in some classifications : a genus of herbs (family Polygonaceae) having flowers in spicate racemes and being now usually included in the genus Polygonum
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Origin and Etymology of persicaria
Medieval Latin, from Latin persicum peach + -aria -ary
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