S: (n) complementary color, complementary (either one of two chromatic colors that when mixed together give white (in the case of lights) or grey (in the case of pigments)) "yellow and blue are complementaries"
S: (v) tap, rap, knock, pink (make light, repeated taps on a surface) "he was tapping his fingers on the table impatiently"
S: (v) pink, ping, knock (sound like a car engine that is firing too early) "the car pinged when I put in low-octane gasoline"; "The car pinked when the ignition was too far retarded"
S: (v) pink (cut in a zigzag pattern with pinking shears, in sewing)