A plant whose name suggests intoxicating properties, possibly a historical or dialectal name for a species of grass or herb used medicinally or recreationally.
From Dutch or Germanic 'dronk' (drunk) combined with 'grass.' This appears to be an obsolete or very localized folk name for a plant, possibly used because of supposed psychoactive or medicinal properties.
Medieval and early-modern Europeans had whimsical names for hundreds of plants based on what they thought they did—dronkgrass was probably some grass people chewed thinking it would get them tipsy, when it definitely wouldn't!
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