洗冤

洗冤	xǐ yuān	to right a wrong; to redress an injustice
洗	xǐ	to wash; to bathe / to develop (photographs) / to shuffle (cards etc) / to erase (a recording)
洗	xiǎn	used in 洗马
冤	yuān	injustice / grievance / wrong
冤	yuān	old variant of 冤