Nelson Eddy's donkey (5)

I believe the answer is:

neddy

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'donkey' is the definition.
(I've seen this before)

'nelson eddy's' is the wordplay.
'nelson' becomes 'n' (this might be a standard abbreviation of which I'm unaware).
'n'+'eddy'='NEDDY'

Can you help me to learn more?

(Other definitions for neddy that I've seen before include "Donkey (colloq.)" , "One of child's 23 ac" .)

I've seen this clue in the Evening Standard.

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