A canopy is an overhead roof or else a structure over which a fabric or metal covering is attached, able to provide shade or shelter from weather conditions such as sun, hail, snow and rain. A canopy can also be a tent, generally without a floor. The word comes from the ancient Greek κωνώπειον (konópeion, "cover to keep insects off"), which is a bahuvrihi compound meaning "mosquito". The first 'o' changing into 'a' may be due to influence from the place name Canopus, Egypt thought of as a place of luxuries.