Var. b/puršašillu, b/puršasillu, etc.
Probably of Sumerian origin, even if the etymon is obscure.
Akkadian
buršuzaggû - (a stone bowl)
(CAD B 333, AHw. 1549)
Probably a “learned” loanword from Sumerian. The Sum. word does not seem to be attested outside a lexical entry. It consists of BUR ‘(stone) bowl, (stone) vessel’ (PSD B 182), ŠU ‘hand; handle’ and ZA₃(G) ‘side, edge, border’.
Akkadian
būru - young calf
(CAD B 340, AHw. 141)
Akkadian
būru - (a type of song)
(CAD B 343)
No etymology can be suggested.
Akkadian
burû - reed mat
(CAD B 339, AHw. 141)
Akkadian
būru - (a synonym for sky)
(CAD B 343)
Or pūru.
No definitive etymology can be suggested.
Akkadian
būru - well; hole, pit
(CAD B 335, 342, AHw. 141)
Var. būrtu.
Akkadian
burubalû - (a type of snake)
(CAD B 344, AHw. 142)
The word seems to be of Sumerian origin, but the etymon is obscure.
Akkadian
burzaraš - (a color and designation of horses)
(CAD B 345, AHw. 142)
Or purzaraš.
While it is likely that the word penetrated into Akkadian from Kassite, its ultimate origin is uncertain.