transitive verb
: to bring into connection with something relevant : join in a unified whole
tie a generating station in with a power system
as
a. : to make the final connection of
tied in the new branch pipeline
b. : to coordinate in such a manner as to produce balance and unity
the illustrations were cleverly tied in with the text
tied in his arguments to the previous discussion
c. : to use as a tie-in especially in advertising
intransitive verb
1. : to become tied in — usually used with with or to
2. : to join warp threads of one series to another : pull a new set of warp threads through the reed