A kayak is a small, narrow boat which is propelled by means of a double-bladed paddle. The word kayak originates from the Greenlandic Inuktitut language, where it is the word 'qajaq'. In the UK the term canoe is often used when referring to a kayak. The traditional kayak has a covered deck and one or more cockpits, each seating one paddler. The cockpit is sometimes covered by a spray deck that prevents the entry of water from waves or spray and makes it possible for suitably skilled kayakers to roll the kayak: that is, to capsize and right it without it filling with water or ejecting the paddler.