Dictionary
tie–in
noun \ˈtī-ˌin\
: a product (such as a toy) that is connected with a movie, television show, etc.
Full Definition of TIE-IN
1
: something that ties in, relates, or connects especially in a promotional campaign
2
: a book that inspired or was inspired by a motion picture or television program
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First Known Use of TIE-IN
1925
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