No etymology can be suggested.
Akkadian
burḫiš - (a foreign wild ox, possibly the yak)
(CAD B 329, AHw. 139)
No etymology can be suggested, probably of foreign origin.
Akkadian
burrātu - (mng. uncert.)
(CAD B 330, AHw. 140)
No etymology can be suggested.
Akkadian
burru - (a cereal)
(CAD B 330, AHw. 140)
See most recently Kogan 2012: 246 (perhaps a West Semitism).
Akkadian
bursaggû - (a kind of offering consisting of a meal)
(CAD B 333, AHw. 140)
The Akk. word occurs only in SB sources and appears to be a late (possibly, “learned”) borrowing from Sum. BUR.SAG-ĝa₂ (a servant, a building) (PSD B 187).
Akkadian
bursallû - (a stone bowl)
(CAD B 333, AHw. 1549)
The Akk. word is attested once in a late lexical list where it corresponds to Sum. (na₄)BUR.SAL-la ‘thin jar’ (for the Sum. word see Selz 1993:629f.).
Akkadian
burṣimtu - box under the door pivot
(CAD B 333, AHw. 140)
No etymology can be suggested.
Var. b/puršašillu, b/puršasillu, etc.
Probably of Sumerian origin, even if the etymon is obscure.