Slim head of geography's belongings (6)

I believe the answer is:

things

I'm a little stuck... Click here to teach me more about this clue!

'belongings' is the definition.
(I've seen this in another clue)

'slim head of geography's' is the wordplay.
'slim' becomes 'thin' (similar in meaning).
'head of geography's' becomes 'gs' (I am not sure about this - if you are sure you should believe this answer much more).
'thin'+'gs'='THINGS'

Can you help me to learn more?

(Other definitions for things that I've seen before include "Objects" , "Stuff" , "Items" .)

I've seen this clue in The Daily Express.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.