eat in
phr. v..phr. v.. to have a meal at home instead of going to a restaurant.
phr. v.. to consume a meal within one's own residence; often used to contrast with dining out or ordering food to be taken away.
I'm tired, so let's just eat in tonight.
We decided to eat in because the weather was too cold to walk to the local bistro.
While many urban professionals prefer the convenience of local eateries, there is a growing trend toward eating in to save money and control ingredients.
usually functions as an intransitive verb with no direct object.
contrast with 'eat out' (at a restaurant) and 'take away' (buying food to bring home); note that 'eat in' can also be used in fast-food contexts to mean eating inside the shop.
We ate in the home.We ate in.the phrase 'eat in' already implies 'at home' or 'on the premises', so adding 'the home' is redundant.