1. A connection or association: the tie-in between economic hardship and civil strife. 2. a. A media product, such as a book, video game, or movie, that makes use of material presented in another, usually more well-known media product: a video game that was a tie-in to a popular movie.
Definition of curtail. 1  transitive verb. : 2  to make less by or as if by cutting off or away some part curtail the power of the executive branch curtail inflation Some school activities are being curtailed due to a lack of funds.
restrain, check, curb, bridle mean to hold back from or control in doing something. restrain suggests holding back by force or persuasion from acting or from going to extremes restrained themselves from laughing. check implies restraining or impeding a progress, activity, or impetus trying to check government spending.