dine in

dine in

To eat at one's home, as opposed to eating at a restaurant ("dining out"). Neither of us felt like going out, so we dined in tonight.
See also: dine
Farlex Dictionary of Idioms.

dine in

to eat at home rather than at a restaurant. I think we will dine in tonight. I am tired of dining in. Let's go out.
See also: dine
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.
See also:
  • dine at
  • dine at (some place)
  • dine on
  • dine on (something)
  • dine off
  • dine off (something)
  • dine
  • dine and dash
  • have swallowed a dictionary
  • ain’t 1