This is the 320th most frequent Turkish word.
iç
"İç" in Turkish means "inside" or "interior".
In this sentence, 'iç' is the imperative form of the verb 'to drink'. It instructs someone to drink something.
Suyu yavaşça iç.
Drink the water slowly.
Here, 'içi' is a noun meaning 'interior' and is combined with a possessive suffix referring to 'our house'.
Evimizin içi çok geniştir.
The interior of our house is very spacious.
The word 'iç' forms the base of 'içeriye', meaning 'inside', indicating direction.