eat out        
phrasal verb with eat verb [ I or T ] uk/iːt/ us/iːt/ ate | eaten
B1 去饭店吃饭;在外用餐
to eat in a restaurant
  When I lived in Spain, I used to eat out all the time. 我住在西班牙的时候,天天去外面吃饭。 
 - More examples
 - I'm not implying anything about your cooking, but could we eat out tonight?
 - You can tell from his empty unused kitchen that he tends to eat out a lot.
 - Dad hates eating out, both because of the cost and because he's too impatient.
 - Because I hadn't had time to go shopping, I suggested that we all ate out - my treat.
 - The boss simply eats out all the time when his wife is away.