(chiefly Britain, dialectal) present participle of bright

(astronomy) That emits significant amounts of radio waves; radio-luminous

Used to describe the most common form of optical microscopy in which light is transmitted through the sample which appears on a bright background

An uncoated nail, susceptible to rust and corrosion, not used for exterior work.

(colloquial, often ironic) A person who is intelligent, clever or quick-witted.

plural of bright spark

A consoling aspect of a difficult situation.

(simile) Very bright (clever, smart, or crafty) / (simile) Very cheery, energetic and upbeat.

plural of intrinsic brightness

The brightness a star would have if not attenuated by distance or intervening gas or dust. As opposed to apparent brightness which it has as measured at a distance.