Geez

dār - race, generation (CDG 140)

dor ‘race, generation’ (CDG 141). These two words are thought to be borrowed from Aramaic and Hebrew respectively by Leslau (CDG 140), but this is far from evident.

PS
*dawr-/*dawar- - period, cycle (DRS 240, Marassini 1971: 48, Fronzaroli 1965: 143, 148, EDA II)

The – apparently iconic (descriptive) – reduplication *dār- dār- (or *dār- dawr-), attested in both Akkadian and early NWS (Ugaritic, Hebrew, Aramaic), may go back to PS.