Wise change of name for Irene? (5)

I believe the answer is:

ernie

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

'wise' is the definition.
(comedian Ernie Wise)

'change of name for irene?' is the wordplay.
'irene' anagrams to 'ERNIE'.
However, I'm unsure how the anagram is indicated.

Can you help me to learn more?

(Other definitions for ernie that I've seen before include "Premium Bonds selection computer" , "One regularly drawing" , "Premium Bond picker" , "It picks Premium Bond winners" , "Sergeant Bilko, for one" .)

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.