Simple soul shattered by a bit of bombing (5)

I believe the answer is:

bimbo

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

'simple soul' is the definition.
'bimbo' can be an answer for 'soul' (bimbo is a kind of soul). I'm unsure of the 'simple' bit.

I cannot understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for bimbo that I've seen before include "Attractive but empty-headed young female" , "Slang for attractive but dim young woman" , "Attractive but vacant girl" , "Pretty, usually stupid, girl" , "Attractive brainless girl" .)

I've seen this clue in the Evening Standard.

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