Crossword Genius

Natural weapon of mammal? Insect left with little hesitation (6)

Ross

I believe the answer is:

antler

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

'natural weapon of mammal?' is the definition.
I can't judge whether this definition defines the answer.

'insect left with little hesitation' is the wordplay.
'insect' becomes 'ant' (ant is a kind of insect).
'left' becomes 'l' (common abbreviation).
'with' says to put letters next to each other.
'little hesitation' becomes 'er' (expression used when hesitating).
'ant'+'l'+'er'='ANTLER'

Can you help me to learn more?

(Other definitions for antler that I've seen before include "Bony outgrowth in the deer family" , "Stag's horn" , "Branch" , "Animal's extension" , "Reindeer horn" .)

I've seen this clue in The Guardian.
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