Barrage of colossal vocabulary (5)

I believe the answer is:

salvo

'barrage' is the definition.
(I've seen this in another clue)

'of colossal vocabulary' is the wordplay.
'of' indicates the answer is hidden within the clue.
'SALVO' is hidden within 'colossal vocabulary'.

(Other definitions for salvo that I've seen before include "Several rounds" , "Artillery salute" , "Burst of firing" , "Simultaneous burst of fire" , "Discharge of weapons in unison" .)

I've seen this clue in The Daily Express.

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