Still odious, taking toy back (4)

I believe the answer is:

doll

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

'toy back' is the definition.
'doll' can be an answer for 'toy' (I've seen this before). I'm not sure about the 'back' bit.

I cannot understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for doll that I've seen before include "Toy in human form" , "Play figure" , "Girl's toy" , "Child's plaything" , "Puppet" .)

I've seen this clue in The Daily Express.

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