This use of 'full' means there is no more room for anything else. It shows something is filled or complete.
The glass is full of water.
My bag is full of books.
'Full' here means you have eaten enough food and you do not feel hungry anymore.
I am full after lunch.
She feels full and happy now.
This meaning shows something is whole or complete, with no missing parts.
She gave a full answer to the question.
We need the full list by tomorrow.
'Full' here means completely grown or developed, especially when talking about people or animals.
He is a full-grown man now.
The full version of the book is long.
'Full' is used here to mean complete or the whole amount of time, effort, or speed.
She works full time at the office.
The car ran at full speed.
This use means a sound that is strong, clear, or rich, often used for voices or music.
He has a full and strong voice.
The music sounds full in the room.
'Full' here means something covers everything completely or is very clear and detailed, often used in formal language.
The contract is a full agreement.
He gave a full explanation of the rules.
As a verb, 'full' means to make something full or fill it completely, but this use is very old and rare in modern English.
They full the sails to catch the wind.
He fulls the glass with water.