A traditional flat Scottish hat made of blue wool; a blue tam-o'-shanter. / Someone who wears such a hat; a Scotsman, especially a Scottish soldier.

Alternative form of black and blue

A high-value poker chip. / A stock or other investment that has a high price because of its perceived reliability.

Alternative spelling of bluechip

aristocratic or patrician

Alternative spelling of blue blood

(chiefly UK, informal, law enforcement) The flashing blue lights and (originally) two-tone siren of a police vehicle.

A lily-like aquatic flower growing in Asia and North Africa, Nymphaea caerulea, revered by the Ancient Egyptians. / Nymphaea nouchali, an aquatic flower native to the Indian subcontinent.

plural of blue line

plural of royal blue