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tie someone or something into somethingand tie someone or something in
to seek to establish a connection between someone or something and something. The police tried to tie Sarah into the crime. They tried to tie in Liz, too.
Attack energetically, as in They tied into the buffet as though they hadn't eaten in months. [Colloquial; c. 1900]
1. To attach and anchor someone or something to someone or something with a knot: They tied the boat into the dock.
2. To connect something with something: This pipe ties the housing development into the city's sewer system.
3. To be connected with something: All the library computer systems tie into the main branch.