kuṇḍaka : [nt.] the powder obtained from the inner rind of rice.

A.P. Buddhadatta Mahathera, Concise Pali-English and English-Pali Dictionary [available as digital version from Metta Net, Sri Lanka]

Kuṇḍaka the red powder of rice husks (cp. kukkusa) Vin ii.151; 280; J ii.289 (text has kuṇḍadaka)=DhA iii.325 (ibid. as ācāma˚). Also used as toilet powder: DhA ii.261 (kuṇḍakena sarīraŋ makkhetvā). -- sakuṇḍaka ( -- bhatta) (a meal) with husk powder -- cake J v.383.
   -- angārapūva pancake of rice powder DhA iii.324; -- kucchi in ˚sindhavapotaka "the rice -- (cake -- ) belly colt" J ii.288; -- khādaka (a) eating rice -- powder J ii.288; (cp. DhA iii.325); -- dhūma, lit. smoke of red rice powder, Ep. of the blood J iii.542; -- pūva cake of husk -- powder J i.422 sq.; -- muṭṭhi a handful of rice -- powder VvA 5; DhA i.425; -- yāgu husk -- powder gruel J ii.288.

Pali-English Dictionary, TW Rhys Davids, William Stede,