(chiefly Britain, dialectal) present participle of bright

(idiomatic) A clear distinction in the context of a legal or moral judgment.

(medicine) Any of several diseases of the kidney characterized by inflammation, and the presence of albumin in the urine; nephritis.

eager and alert

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.

plural of intrinsic brightness

plural of apparent brightness

(astronomy) The brightness of a star as measured by an observer, as opposed to its intrinsic brightness when corrected for distance or absorption.

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

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