0 a horn that makes a very loud sound to warn ships that they are close to land or other ships: --
He has a voice like a foghorn (= an unpleasantly loud voice).
1 a loud horn that a ship uses in a fog to warn other ships of its position --
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.