melancholy thistle is a noun meaning "perennial stoloniferous thistle of northern Europe with lanceolate basal leaves and usually solitary heads of reddish-purple flowers". It carries one recorded sense.
perennial stoloniferous thistle of northern Europe with lanceolate basal leaves and usually solitary heads of reddish-purple flowers
Definitions, synonyms and semantic relations for melancholy thistle come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.