Crossword Genius

Glimpse into a couple of pages reveals item that's disposable (5,3)

Ross

I believe the answer is:

paper cup

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

'item that's disposable' is the definition.
I can't judge whether this definition defines the answer.

'glimpse into a couple of pages' is the wordplay.
'glimpse' becomes 'apercu' (I've seen this before).
'into' is an insertion indicator.
'a couple of' shows that letters should be duplicated.
'pages' becomes 'p'.
'p' doubled is 'pp'.
'apercu' going inside 'pp' is 'PAPER CUP'.

'reveals' acts as a link.

Can you help me to learn more?

(Another definition for paper cup that I've seen is " that may hold water".)

I've seen this clue in The Independent.
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