Sunblind refers to anything that blocks or filters out the sun's rays, such as a shade or a visor. Synonyms for this term include sunshade, sun visor, awning, canopy, parasol, and umbrella. A sunshade is a covering that can be extended or retracted to protect against the sun's glare and heat. A sun visor is a shield attached to a vehicle's windshield that blocks out the sun's rays. An awning is typically a fabric or canvas cover that provides shade over a window, door, or patio. A canopy is a structure, usually made of cloth, that provides shade over a large area. In contrast, a parasol and umbrella are handheld devices that protect against the sun and rain, respectively.