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

plural of royal blue

(music) A musical genre combining elements of blues and rock and roll

(music) To sing in the style of blues music. / (idiomatic, by extension) To complain, especially in order to obtain sympathy for one's own purportedly sad situation.

plural of ice blue

plural of blues scale

plural of sky blue

plural of midnight blue

plural of Copenhagen blue

plural of Wedgwood blue