eat · verb /iːt/
eat (SWALLOW FOOD)
A1 I or T to put food into your mouth and then swallow it
Dictionary examples:
Who ate all the cake?
I haven't eaten since breakfast.
Let's have something to eat.
Learner example:
I want [to] go to the river and eat a big chocolate cake. (Key English Test; A2; Spanish)
eat (HAVE MEAL)
A1 I to have a meal
Dictionary example:
We usually eat at about 7 o'clock.
Learner example:
I go there to eat whenever I have time. (Preliminary English Test; B1; Swiss German)
eat out
B1 to eat in a restaurant
Dictionary example:
When I lived in Spain, I used to eat out all the time.
Learner example:
If you don't have any plans next weekend, I want to eat out with you. (Preliminary English Test; B1; Japanese)
eat up (sth) or eat (sth) up
B2 to eat all the food you have been given
Dictionary example:
Be a good boy and eat up your dinner.
Learner example:
There wasn't any more time after eating it up. (First Certificate in English; B2; Japanese)