Head of spatula pounds molluscs (5)

I believe the answer is:

squid

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'head of spatula pounds molluscs' is the definition.
I can't judge whether this defines the answer.

'head of spatula pounds' is the wordplay.
'head of' indicates taking the first letters.
'pounds' becomes 'quid' (I've seen this in another clue).
The initial letter of 'spatula' is 's'.
's'+'quid'='SQUID'

Can you help me to learn more?

(Other definitions for squid that I've seen before include "Marine cephalopod" , "Edible eight-arm mollusc" , "Ten-armed mollusc" , "Cephalopod mollusc" , "Eight-armed mollusc" .)

I've seen this clue in The Independent.

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