1. A fastener that serves to join or connect
   - link, linkup, tie

1. Be in connection with something relevant
   "This ties in closely with his earlier remarks" 
2. Make a logical or causal connection
   - associate, relate, link, colligate, link up, connect

Derived forms: ties in, tie-ins, tied in, tying in

Type of: cerebrate, cogitate, fastener, fastening, fixing, holdfast, interrelate, relate, think

Encyclopedia: Tie-in

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