- a temporary stoppage or interruption of work, production, traffic, service, etc.
- Dial. a place for tying up cattle at night
- a connection, relation, or involvement, as between businesses; specif., merger (sense )
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 immobilization, as of traffic, work, or mechanical operation.