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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1925
First Known Use of tie–in
1925
TIE–IN Defined for English Language Learners
tie-in
play
noun
Definition of tie–in for English Language Learners
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: a product (such as a toy) that is connected with a movie, television show, etc.
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