Crossword Genius

Supplier of three queens? (7)

Ross

I believe the answer is:

caterer

'supplier' is the definition.
(a caterer supplies food)

'three queens?' is the wordplay.
'three queens?' can mean three replacements for 'queen'.
'queen' becomes 'cat' (a queen is a female cat).
'queen' becomes 'ER' (abbreviation for Elizabeth Regina).
'queen' becomes 'ER' (abbreviation for Elizabeth Regina).
'cat'+'er'+'er'='CATERER'

'of' acts as a link.

(Other definitions for caterer that I've seen before include "Purveyor" , "One supplying cheer" , "Provider of food and drink" , "Someone who provides food and service" , "Refreshment supplier" .)

I've seen this clue in The Telegraph.
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