0 the part of the body that you sit on --
1 someone who has no home or job and lives by asking other people for money --
2 bad in quality or not useful: --
He gave us bum directions, but we eventually found the place.
3 to ask someone for something without intending to pay for it: --
Could I bum a cigarette off you?
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.