Hooded fellow interrupted Jacob randomly (5)

I believe the answer is:

cobra

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

'hooded fellow interrupted' is the definition.
I can't judge whether this definition defines the answer.

'jacob randomly' is the wordplay.
'COBRA' is hidden within the letters.
But, I'm unsure how this is indicated.

Can you help me to learn more?

(Other definitions for cobra that I've seen before include "a king, for example" , "Hooded snake - AC model of old sports car" , "Reptile (found in Cabinet Office Briefing Room A?)" , "One with hood" , "Venomous Asiatic and African elapid snake" .)

I've seen this clue in The Irish Times.

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