hookup

Etymology

From the verb phrase hook up.

noun

1. (sometimes attributive) A connection.
   The plumber came to fix the sewer hookup.
   I need to buy some hookup wire.
2. (slang) A brief sexual relationship or encounter.
   He met his two most recent partners at bars, and expressed strong ambivalence and dislike of meeting partners online, but reported half a dozen additional hookups with partners met online.
   Grindr’s main purpose is to facilitate hookups that are “spontaneous and intimate,” he said. 2013-03-10, Jenna Wortham, “How Grindr Is Changing the Way We Connect”, in New York Times
3. (slang) A sexual partner.
   The predominant way of finding a hookup or sexual partner would be going online.
   I bought more bungee cords and made my way to my hookup’s house via slower, more manageable back roads. 2015, Tyler Oakley, Binge, Simon and Schuster