A wiperless windshield is a windshield that uses a mechanism other than wipers to remove snow and rain from the windshield. The concept car Acura TL features a wiperless windshield using a series of jet nozzles in the cowl to blow pressurized air onto the windshield.
Half sibling A half sibling (half brother or half sister) is a sibling with one shared biological or adoptive parent. A half sibling that shares the same mother (but different fathers) is known as a uterine sibling, whereas one that shares the same father is known as an agnate sibling.
A half-sister would mean that you either share a mother or father with her and you would be related by blood. A step-sister would have no blood relation to you but would be your sister by marriage. Ex: Your mother remarries and her new husband has a daughter. Hope this helps.