Was a looker, I had heard (4)

I believe the answer is:

eyed

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

'was a looker' is the definition.
I can't judge whether this defines the answer.

'i had heard' is the wordplay.
'i had' becomes 'i'd' (I'd).
'heard' shows a homophone (sound like).
'id' is a homophone of 'EYED'.

Can you help me to learn more?

(Other definitions for eyed that I've seen before include "Ogled" , "Stared at" , "Watched, looked at" , "Looked at closely" , "Watched warily" .)

I've seen this clue in the Evening Standard.

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