tie-in
- n a fastener that serves to join or connect
- Even the tie-in action figures with Reese's Pieces suggest this is a fast-food movie.
- In a little over six months more than a half-million units of the DVD have shipped; it ranked in Amazon's Top 5 sellers during Christmas week; and a tie-in hardcover book just .
- This movie tie-in all but fell into the lap of Hershey, which sold some $35 million worth of Reese's Pieces last year.