v.1. To fasten, secure, or bind someone or something with or as if with a cord, rope, or strap: I tied up the package with twine and sent it off. The robbers tied the bank tellers up and locked them in the vault.
2. To secure something, such as a vessel, to a shore or pier; dock something: Did you remember to tie the boat up? I tied the canoe up at the end of the dock. The captain pulled the ship alongside the pier, and the crew tied up.
3. To be secured to a shore or pier; dock: The ship tied up at the end of the pier.
4. To keep someone or something occupied; engage someone or something: The kids have tied up the phone all evening, talking to their friends. A project this large will tie our resources up for months. The senator is tied up in a meeting and won't be able to take your call.
5. To place some funds so as to make them inaccessible for other uses: Don't tie up all your cash in long-term investments. The bank has tied the money up in bad loans.
6. To equal an opponent's score in some contest: We tied up the game with minutes remaining. A touchdown will tie the game up. The game is all tied up at 10 points apiece.