brightness; splendour; splendor
light spot (e.g. a blip on radar); luminous dot; always-on pixel (as a defect in LCD displays); stuck pixel
stibnite (mineral); antimonite
high luminance (used to describe bold-face text on display screen)
luminance signal; Y signal
brilliant; shining; splendid; glorious
Japanese calendar's six labels, indicating how auspicious each day is
vitreous copper; copper glance; chalcocite