Bar, short for barley?

The Sumerian word bar may be responsible for English and other Indo-European languages for “barley” and “barn” as a place to hold it.) Henshaw was struck by the three large signs at the end of the tablet, at the bottom of the drawing. Reading from right to left we see a sun rising with the number “one” above it; a vessel containing (likely) beer; and a bowl. The bowl became a standard measure—the first money—for a ration of barley, the mean ingredient in beer and bread.

The word ‘bar’ also appears in scripture:

Gen 42:3  And Joseph’sH3130 tenH6235 brethrenH251 went downH3381 to buyH7666 cornH1250 in Egypt. H4480 H4714

H1250
בַּר    בָּר
bâr    bar
bawr, bar
From H1305 (in the sense of winnowing); grain of any kind (even while standing in the field); by extension the open country: – corn, wheat.

https://digitalcommons.brockport.edu/cgi/viewcontent.cgi?article=1001&context=sunybeb&fbclid=IwAR3uuX24Q3aDuDIuJDWZyRDuN-oiWXxZAXXhmCwwG9ims5vN4vheWQlgRYg