transitive. To shine light on (someone or something); to illuminate; to make bright. Now often with up.

transitive. To make smooth (and usually glossy) by friction; (in later use also) to apply polish to or rub polish into. Also with up. Also: to…

transitive. To brighten.

To make bright or pure.

transitive. To make clear or bright; to bring to light; to render illustrious.

transitive. To make (an object or place) bright or brighter, esp. by casting light; to illuminate. Also: to cause (a light source) to give off…

To throw into relief, make brilliant, heighten the lustre of. Obsolete.

(un-, prefix2 affix 1a.)

transitive. To render bright.

transitive. = brighten, v.

transitive. To make resplendent.

(un-, prefix2 affix 1d(c).)

transitive. To render lucid; now only figurative to throw light upon, clear up, explain. Also absol.

To make brighter or more brilliant.