Crossword Genius

Where the font is waffled at by priest (10)

Ross

I believe the answer is:

baptistery

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

'where the font' is the definition.
Although both the answer and definition are singular nouns, I cannot see how one could define the other.

'waffled at by priest' is the wordplay.
'at by priest' anagrams to 'BAPTISTERY'.
However, I'm unsure how the anagram is indicated.

'is' is the link.

Can you help me to learn more?

(Another definition for baptistery that I've seen is " sacred area".)

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