PWS

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

Akkadian
burru - (a cereal) (CAD B 330, AHw. 140)

See most recently Kogan 2012: 246 (perhaps a West Semitism).

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

Hebrew
bar - grain, cereal (HALOT 153)
Arabic
burr- - wheat (Lane 1876, p. 176)
Sabaic
br - (a cereal, probably wheat) (SD 31, Sima 2000, pp. 200–202)
Mehri
barr - (a cereal) (ML 51)
Jibbali
bohr - (a cereal) (JL 27)
Soqotri
bor - (a cereal, probably maize) (LS 98)