close out

verb8

1. •
   To terminate; to call the end of.

   • Lisicki recovered quickly enough and broke once again at 1-1, using her heavy to serve to dominate before a sweetly-struck backhand down the line closed out the set after 43 minutes. — 2011
2. •
   To terminate a computer program.
3. •
   To make trades offsetting an existing position, leaving the trader with a neutral position.
4. •
   To exclude by blocking all opportunities to enter or join.
5. •
   To settle, to pay what is due.

   • Much to the dismay of bartenders, many 20-somethings prefer to close out and pay after every drink, no matter how many beverages they end up ordering. — 2025
6. •
   Synonym of close (“to make a sale”).

   • Sales people are taught how to close out the deal. Buyers are less well trained but protect themselves with processes that stop the seller from reaching this stage. — 2017
7. •
   To seal off.

   • One week later, the new Tracking and Data Relay Satellite (TDRS-C) was loaded on Discovery and the payload bay doors were cleared and closed out. — 2008
8. •
   To break all at once, instead of progressively along its length.

   • You either want to land on the top of the wave (if it has closed out), or in the transition — 2005