Learnt about bony outgrowth (6)

I believe the answer is:

antler

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'bony outgrowth' is the definition.
'antler' can be an answer for 'outgrowth' (antler is a kind of outgrowth). I'm unsure of the 'bony' bit.

'learnt about' is the wordplay.
'about' indicates an anagram.
'learnt' anagrammed gives 'ANTLER'.

Can you help me to learn more?

(Other definitions for antler that I've seen before include "Deer-horn" , "Part of a deer" , "One seen on stag" , "Stag horn" , "Bony outgrowth in the deer family" .)

I've seen this clue in The Sun.

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