Ebla

ḳá-sa-tum - wood, forest (VE 400; Krebernik 1983: 15)

equated with Sum. GIŠ.TIR

PS
*ḳayŝ- - forest, wood (Fronzaroli 1969a: 277, 290; Kogan 2011: 200; Kogan 2012: 230)