1. {coord. conj.} Used to introduce an indirect question. * /You must decide whether you should go or stay./ * /I don't know whether Jack or Bill is a better player./ Compare: EITHER --- OR(2). Used to show a choice of things, or that different things are possible. * /Whether the bicycle was blue or red, it didn't matter to Frank./
WHETHER --- OR WHETHER[
Meaning of WHETHER --- OR WHETHER[ in English
Dictionary of English idioms . Словарь английских идиом. 2012