|a screen or mat covered with a dark material for shielding a camera lens from excess light or glare.|
|an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle.|
a winter sport using a guidable, single-track vehicle that has features of the bicycle, the bobsled, and skis. The longer rear ski is fixed, and the shorter front ski is mobile for steering; a saddle like that of a bicycle and a steering bar with handles complete the rig. The assembly is kept flexible to provide smooth passage over bumps and is lightweight, made of wood, aluminum, or plastic for portability. The skibob measures 1.9 to 2.29 metres (6.2 to 7.5 feet) in length. The rider wears short skis and a helmet, but goggles are optional
Learn more about skibobbing with a free trial on Britannica.com.