Where the lumberjack is disturbed (5)

I believe the answer is:

hewer

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

'where the lumberjack is disturbed' is the definition.
Although both the answer and definition are singular nouns, I can't see how one could define the other.

'where the lumberjack is disturbed' is the wordplay.
'where' can be anagrammed to 'HEWER'.
But, I am unsure how the anagram is indicated.

Can you help me to learn more?

(Other definitions for hewer that I've seen before include "cutter" , "Nick" , "Axeman" , "Person cutting (wood, say) with blows" .)

I've seen this clue in The Globe and Mail.

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