›an amount or total: [C]A large number of tickets were sold almost immediately.[C]Large numbers of people (= A lot of people) crowded the streets.[U]Quite a number of (= Many) cases of the flu have been reported already.›A number of things is several of them: [U]There were a number of causes for the accident.›Any number of things is a lot of them: [U]He’d already heard any number of excuses.