From Japanese-English FreeDict Dictionary ver. 0.1:
[ichi1] 割 /(en)tʃˈaɪniːz(ja)lˈe̞tə/, [ichi1] [news1] [nf05] 割り /ɽˈi/, [ichi1] [news1] [nf05] わり /wˈäɽi/
1. (noun (common) (futsuumeishi))
(noun, used as a suffix)
rate, ratio, proportion, percentage
2. profit
3. assignment
4. 10%, unit of ten percent
5. [sumo term] match, schedule of matches
6. (noun, used as a suffix)
水割り・1diluted with (of drinks), mixed with