'Scotch thistle' definitions:

Definition of 'Scotch thistle'

From: WordNet
noun
Biennial Eurasian white hairy thistle having pale purple flowers; naturalized in North America [syn: cotton thistle, woolly thistle, Scotch thistle, Onopordum acanthium, Onopordon acanthium]

Definition of 'Scotch thistle'

From: GCIDE

Definition of 'Scotch thistle'

From: GCIDE