horn·wort /-ˌwɝt, ˌwɔrt/
金魚藻
Horn·wort n. Bot. An aquatic plant (Ceratophyllum), with finely divided leaves.
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hornwort
n 1: any aquatic plant of the genus Ceratophyllum; forms
submerged masses in ponds and slow-flowing streams
2: liverworts with slender hornlike 2-valved capsules