Tie-up is defined as a temporary stop or slow down.
An example of a tie-up is a traffic jam on a highway.
- ☆ a temporary stoppage or interruption of work, production, traffic, service, etc.
- ☆ a place for mooring a boat
- ☆ Dialectal a place for tying up cattle at night
- connection, relation, or involvement
A temporary immobilization, as of traffic, work, or mechanical operation.