rift рдХреНрдпрд╛ рд╣реИрдВ? rift рдХреНрдпрд╛ рд╣реИрдВ? A fissure, crack, or opening, as in rock.A break in friendly relations: a rift between siblings.Geology An area where the lithosphere is thinning, typically associated with large faults and grabens.A shallow area in a waterway.The backwash of a wave that has broken upon a beach.