Ebla

bù-ur-tum - (a cereal) (VE 81; Conti 1990: 75; Kogan 2012: 247)

an entry in the bilingual lexical list from Ebla, =sum. ninda.géme

PWS
*burr- - wheat (Fronzaroli 1969b, pp. 12, 27, 34, Kogan 2011: 203, Kogan 2012: 246)