one of a small group of blue stars within a cluster that falls near the main sequence even though other stars of its color have evolved off the main sequence.
something moving very fast: They traveled like a blue streak through Italy. continuous, rapid, or interminable speech: to talk a blue streak.
blue streak, a
a composite garden plant, Catananche caerulea, of southern Europe, having very hairy leaves and blue flower heads, used by the ancients as a love potion.
an edible Australian crab, Portunus pelagicus. noun an edible bluish Australian swimming crab, Portunus pelagicus (Austral, informal) an Australian ten-dollar note