blue flag

1. 1.

   a common iris of the eastern United States having blue or blue-violet flowers; root formerly used medicinally

   SynonymsIris versicolor

   Broaderiris

Questions about blue flag

What does blue flag mean?

blue flag means "a common iris of the eastern United States having blue or blue-violet flowers; root formerly used medicinally".

What is another word for blue flag?

Close synonyms include Iris versicolor. Each sense on this page lists its own synonyms, because a word with several meanings rarely has one substitute that works for all of them.

Is blue flag a common word?

blue flag is banded "Uncommon" — turns up in careful writing rather than conversation. The band comes from how often the word appears in a large corpus of everyday English, not from an editor's impression.