I spot nurses beginning to inject Hoskins? (5)

I believe the answer is:

idiot

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

'hoskins?' is the definition.
I can't tell whether this definition defines the answer.

'i spot nurses beginning to inject' is the wordplay.
'spot' becomes 'dot' (I've seen this before).
'nurses' is an insertion indicator (nurse can mean to hold onto or harbour).
'beginning to' indicates taking the first letters.
The initial letter of 'inject' is 'i'.
'dot' enclosing 'i' is 'diot'.
'i'+'diot'='IDIOT'

Can you help me to learn more?

(Other definitions for idiot that I've seen before include "Steal small amount" , "Dipstick" , "Moron, fool" , "Stupid person" , "Ass, nincompoop" .)

I've seen this clue in The Independent.

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