Elsa’s icy, mean, cool, afraid, pent-up? (4)

I believe the answer is:

olaf

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'elsa's icy' is the definition.
I can't judge whether this defines the answer.

'cool afraid pent-up?' is the wordplay.
'OLAF' is hidden within the letters.
However, I am not sure how the hidden word is indicated.

'mean' is the link.

Can you help me to learn more?

(Other definitions for olaf that I've seen before include "King and patron saint of Norway" , "Name of five kings of Norway" , "St ---, Norwegian king" , "King --, cantata by Elgar" , "Name of five Norwegian kings" .)

I've seen this clue in the Sydney Morning Herald.

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