Definition of down thistle in English:
down thistle
noun
rareThe cotton thistle, Onopordon acanthium.
Origin
Late 16th century; earliest use found in John Gerard (c1545–1612), herbalist.
Are You Learning English? Here Are Our Top English Tips
The cotton thistle, Onopordon acanthium.
Late 16th century; earliest use found in John Gerard (c1545–1612), herbalist.