Ugaritic

šd - open field, stretch of cultivated land; field, land, plot, estate, farm (DUL 807)

PC
*ŝaday- - (cultivated) field (Kogan 2015: 307)
The meaning “cultivated field” for *ŝadaw- is a highly specific PC innovation with no precedent in other Semitic languages, where this concept is expressed, inter alia, by the reflexes of PS *ḥaḳl- (Fronzaroli 1969 :8‒9, 26)