: a situation in which something (such as traffic) becomes very slow or stops because of a problem, accident, etc.
: a close connection between people or things
: an agreement to do business together
What made you want to look up tie-up? Please tell us where you read or heard it (including the quote, if possible).
Take Our 10-Question Quiz
The commonly misspelled words quiz
How strong is your vocabulary?
The Vocab Quiz Game for iPhone & iPad
"Incredibly fun and addictive. And informative!" User Review, iTunes