Some cannons to paste us without ceasing (7)

I believe the answer is:

nonstop

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'us without ceasing' is the definition.
I can't tell whether this defines the answer.

'some cannons to paste' is the wordplay.
'some' indicates a hidden word (some of the parts of the word are used).
'NONSTOP' is hidden within 'cannons to paste'.

Can you help me to learn more?

(Other definitions for nonstop that I've seen before include "Constant" , "Never pausing" , "Done without pause" , "Ceaselessly" , "Without pause or interruption" .)

I've seen this clue in the Sydney Morning Herald.

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