精
セイ, ショウ, シヤウ, きよ
refined, ghost, fairy, energy, vitality, semen, excellence, purity, skill
JLPT3 G5 S14 F752
As per 青# (clean/pure) + 米 rice → extract the *essence* of rice in polishing it → *refine/polish*; *spirit* → *semen* (← essence); *elaborate*; *detailed* (← refining process). Note the variant form 精.
[Full Kanji Etymology List]