Crossword Genius

Heavy consumer at Greyfriars? (6)

Ross

I believe the answer is:

bunter

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

'heavy' is the definition.
The definition and answer can be both people as well as being singular nouns.
Maybe they are linked in a way I don't understand?

I don't understand the remainder of the clue.

Can you help me to learn more?

(Other definitions for bunter that I've seen before include "Billy ......, iconic English fat boy" , "Billy ..., the Owl of the Remove at Greyfriars" , "Unending time" , "Billy -, fict. schoolboy" .)

I've seen this clue in The Sun.
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