01 n. A species (Polygonum Hydropiper) of knotweed with acrid foliage; water pepper; smartweed.
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1.
A species (Polygonum Hydropiper) of knotweed with acrid foliage; water pepper; smartweed.(Bot.)
Entry
1 sense
Webster, 1913
Hydropiper
· Hy·dro·pi·per
· IPA