Bolts are shot by these angry cockneys (11)

I believe the answer is:

crossbowmen

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'bolts are shot' is the definition.
The answer and definition are not the same part of speech.

'by these angry cockneys' is the wordplay.
'by' says to put letters next to each other.
'these angry' becomes 'cross' (cross can mean annoyed or angry).
'cockneys' becomes 'bowmen' (I am not sure about this - if you are sure you should believe this answer much more).
'cross'+'bowmen' is 'CROSSBOWMEN'.

Can you help me to learn more?

I've seen this clue in The Independent.

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