wastewaste3adjectivenot useful or needed: There's an area of waste ground outside the town where people dump their rubbish.waste paperwastewaste2noun (no plural)1not using something in a useful way: It's a waste to throw away all this food! This watch was a waste of money – it's broken already!2things that people throw away because they are not useful: A lot of waste from the factories goes into this river.wastewastewasteswastedwasting1verb (wastes, wasting, wasted)to use too much of something or not use something in a good way: She wastes a lot of money on sweets. He wasted his time at university – he didn't do any work.