Crossword Genius

Public figures absent from the boozer (3)

Ross

I believe the answer is:

pub

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'boozer' is the definition.
(UK slang)

I cannot understand how the remainder of the clue works.

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(Other definitions for pub that I've seen before include "Place to drink" , "Drinking place" , "Alehouse" , "free house?" , "Tavern, hostelry" .)

I've seen this clue in the Evening Standard.
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