v.
1.improve or perfect by pruning or polishing
2.make more complex, intricate, or richer
3.treat or prepare so as to put in a usable condition
4.reduce to a fine, unmixed, or pure state
5.attenuate or reduce in vigor, strength, or validity by polishing or purifying
6.make more precise or increase the discriminatory powers of
Idiom of the Day
set (someone or something) loose
to set someone or something free, to release someone or something that you are holding
The wildlife department decided to set the bear loose.