Quick definitions from WordNet (blue flag)
▸ noun: a common iris of the eastern United States having blue or blue-violet flowers; root formerly used medicinally
▸ Also see blue_flag
▸ Words similar to blue flags
▸ Usage examples for blue flags
▸ Words that often appear near blue flags
▸ Rhymes of blue flags
▸ Invented words related to blue flags
▸ noun: a common iris of the eastern United States having blue or blue-violet flowers; root formerly used medicinally
▸ Also see blue_flag
▸ Words similar to blue flags
▸ Usage examples for blue flags
▸ Words that often appear near blue flags
▸ Rhymes of blue flags
▸ Invented words related to blue flags