0 to fasten something together using string, rope, or something similar: --
It was an old-fashioned parcel, tied up with string.
1 to cause something, often money or possessions, not to be available for use: --
2 if money is tied up, it is invested in something and not available for spending on something else: --
3 to agree all the details of a business arrangement: --
4 to use a piece of equipment so that it cannot be used by anyone else, usually for a long time: --
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.
We kunnen het stap voor stap voltooien, hoe lang de weg ook is en het kan niet worden voltooid, hoe kort de weg ook is, als je niet eens je voetafdruk markeert.