This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

n. A system or network of electrical circuits or equipment designed to operate together.

n. A configuration of mechanical parts or devices providing a link between a supply source and a user: a gas hookup for a mobile home.

n. A plan or schematic drawing of such a system or such a configuration.

n. Informal A linkage or connection, often between unlikely associates or factors.

adj. For the purpose of connecting.

n. A connection.

n. A brief sexual relationship or encounter; a fling.

n. A sexual partner

n. a device providing a connection between a power source and a user

n. a system of components assembled together for a particular purpose

"Holman and her colleagues queried 274 college students on how they defined the term "hookup" and how often they themselves hooked up."

hookups   

connexion    connection    connective    connecter    connector    system   

hook up   

fling    l    en   

hook-up    switchboard    arcing    downlink    eductor    earpiece    hookups    piture    stimulators    firefighting