'tie-up' definitions:
Definition of 'tie-up'
(from WordNet)
noun
A social or business relationship; "a valuable financial affiliation"; "he was sorry he had to sever his ties with other members of the team"; "many close associations with England" [syn: affiliation, association, tie, tie- up]
noun
An interruption of normal activity [syn: stand, standstill, tie-up]