Something 'see through' (5)
I believe the answer is:
glass
'see through' is the definition.
The definition and answer can be both to do with ownership as well as being verbs in their base form.
Maybe they are linked in a way I don't understand?
I cannot understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for glass that I've seen before include "Tumbler, mirror" , "measure of wine" , "Drink container" , "Tumbler or flute?" , "Something to drink from" .)