Threaten to cane 'em 'orribly! (6)

I believe the answer is:

menace

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

'threaten' is the definition.
(synonyms)

'cane 'em 'orribly' is the wordplay.
'cane 'em' anagrams to 'MENACE'.
But, I'm unsure how the anagram is indicated.

'to' is the link.

Can you help me to learn more?

(Other definitions for menace that I've seen before include "Intimidate" , "ominous atmosphere" , "Threat; threaten" , "Intimidation" , "Threaten with harm or danger" .)

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