琢磨 [ㄗㄨㄛˊ ˙ㄇㄛ; zuo2 mo5]
  to ponder
  to mull over
  to think through
  Taiwan pr. [ㄓㄨㄛˊ ㄇㄛˊ; zhuo2 mo2]
  琢磨 [ㄓㄨㄛˊ ㄇㄛˊ; zhuo2 mo2]
  to carve and polish (jade)
  to polish and refine a literary work
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  琢磨
  たくま
  noun (common) (futsuumeishi)
  noun or participle which takes the aux. verb suru
  polish (jewels)
  cultivation
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