PWS

*bVlVyt- - curtain, rag

Probably a generalization from “old, worn out cloth” to “cloth” in general.

PS
*bly - to be old, worn out (CDG 98; Kogan 2015: 184; EDA I 212)

Connection with ESA blyt ‘to be buried suggested by W. Müller (1962: 29, 1963: 307) is doubtful (CDG 98)

Jewish Babylonian Aramaic
bəlītā - rag (DJBA 221)
Syriac
blāyā - rag (LSyr. 74; SL 157)
Mandaic
blaita - worn-out fragment, rag (MD 65)
Tigre
bəllāy - garment, cloth (WTS 273)