Plural of bullrush; aquatic or marsh plants with thick, spongy, cylindrical stems.
Plural form of 'bullrush' (bull + rush). Maintains the singular form's etymology from Old English rush with the 'bull' prefix denoting size or coarseness.
In medieval Europe, bullrushes were so economically important that entire cottage industries formed around harvesting and processing them—they were used for rushes on castle floors and torches!
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