From Japanese-English FreeDict Dictionary ver. 0.1:
椋木 /(en)tʃˈaɪniːz(ja)lˈe̞tə (en)tʃˈaɪniːz(ja)lˈe̞tə/, 椋の木 /(en)tʃˈaɪniːz(ja)lˈe̞tə nˈo̞ (en)tʃˈaɪniːz(ja)lˈe̞tə/, 樸樹 /(en)tʃˈaɪniːz(ja)lˈe̞tə (en)tʃˈaɪniːz(ja)lˈe̞tə/, 椋 /(en)tʃˈaɪniːz(ja)lˈe̞tə/, むくのき /mˌɯᵝkɯᵝnˈo̞ki/, (椋) むく /mˈɯᵝkɯᵝ/, () ムクノキ /mˌɯᵝkɯᵝnˈo̞ki/ (noun (common) (futsuumeishi))
Note: word usually written using kana aloneAphananthe oriental elm (Aphananthe aspera), mukutree