Crossword Genius

Does one have a glass on top preparing food? (8,5)

Ross

I believe the answer is:

dressing table

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

'does one have a glass on top' is the definition.
I can't tell whether this definition defines the answer.

'preparing food?' is the wordplay.
'preparing' becomes 'dressing' (dressing is a kind of preparing).
'food?' becomes 'table' (table is a kind of food).
'dressing'+'table'='DRESSING-TABLE'

Can you help me to learn more?

(Other definitions for dressing table that I've seen before include "Here one may make up" , "Item of furniture" , "Bedroom item" , "boudoir item" , "Piece of furniture with mirror and drawers for cosmetics etc" .)

I've seen this clue in The Independent.
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