köken: From Low German Bolltje, diminutive of Boll (“roundish object”), from Proto-Germanic *bullǭ, whence also Danish bolle. Compare the form Bollchen (“hard candy”) in northern colloquial German. Also cognate with Dutch bolletje.
From Middle Dutch candi, candijt (“rock sugar”), from Old French candi (“candied”), from Arabic قَنْدِي (qandī), genitive of قَنْد (qand, “rock sugar”), from Persian کند (kand, “candied sugar”) from Sanskrit खण्ड (khaṇḍa, “candied sugar”).