[adverb] [not gradable] - (after words beginning with any-, every-, no- and some-, or after how, what, where, who, why but not which) other, another, different, additionalEverybody else has (= All the other people have) agreed except for you.If it doesn't work, try something else (= something different/another way or thing).Let's go before they ask us to visit anyone else (= another/an additional person).It's not my bag. It must be someone else's (= it must belong to another person).Has anyone else (= any other person) got a bag like this?The book isn't here. Where else (= In what other place) should I look?He came to see you. Why else (= For what other reason) would he come?After I'd thanked them I didn't know what else (= what other/additional things) to say.Or else is a stronger way of saying 'or'.We must be there by six or else we'll miss the beginning.(informal) Or else is also used as a threat, sometimes humorously.He'd better find it quickly, or else (= or I will punish him in some way)!
ELSE
Meaning of ELSE in English
Cambridge English vocab. Кембриджский английский словарь. 2012