0 used instead of a particular name to refer to someone or something, especially when the real name is not important or you have forgotten it: --
1 a polite way of referring to an unpleasant person: --
Mr Baker was such a so-and-so - he was always really mean!
2 (used instead of an actual name) a particular person or thing: --
We can complete it step by step however long the road is and it can't be completed however short the road is if you don't even mark your footprint.
Vi kan slutföra det steg för steg hur lång vägen än är och den kan inte slutföras hur kort vägen än är om du inte ens markerar ditt fotavtryck.