Entry 1 sense Webster, 1913 Adsuki bean /(ăd*so͞o"kĭ; ăd*zo͞o"kĭ)/ · Ad·su·ki bean · IPA 01 A cultivated variety of the Asiatic gram, now introduced into the United States. 1. A cultivated variety of the Asiatic gram, now introduced into the United States.