1. (noun)affiliation, association, tie, tie-up a social or businessrelationship "a valuable financial affiliation"; "he was sorry he had to sever his ties with other members of the team"; "many close associations with England"
3. (verb)tie down, tie up, bind, truss secure with or as if with ropes "tie down the prisoners"; "tie up the old newspapers and bring them to the recycling shed"
4. (verb)tie up invest so as to make unavailable for other purposes "All my money is tied up in long-term investments"
5. (verb)tie up restrain from moving or operating normally "Traffic is tied up for miles around the bridge where the accident occurred"
6. (verb)moor, berth, tie up secure in or as if in a berth or dock "tie up the boat"
Definitions of tie-up 
