Tie up

фразовый глагол 1) забинтовать 2) объединяться, соединять усилия 3) устраивать, организовывать (какое-либо) мероприятие 4) [используется в разговорной речи] загружать работой (кого-либо) 5) мешать работать 6) [морское дело] швартоваться 7) согласовываться 8) ограничивать оборот денег, консервировать

Большой англо-русский словарь

Tie up

verb transitive verb 1. to attach, fasten, or bind securely; also to wrap up and fasten 2. a. to connect closely; join Example: tie up the loose ends b. to cause to be linked so as to depend on or relate to something 3. a. to place or invest in such a manner as to make unavailable for other purposes Example: their money was tied up in stocks b. to restrain from normal movement, operation, or progress Example: traffic was tied up for miles 4. a. to keep busy Example: was tied up in conference all day b. to preempt the use of Example: tied up the phone for an hour intransitive verb 1. dock Example: the ferry ties up at the south slip 2. to assume a definite relationship Example: this ties up with what I told you before

Merriam-Webster's Collegiate Dictionary