Survivor perhaps after soft wound dressing (7)

I believe the answer is:

plaster

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

'dressing' is the definition.
(plaster is a type of medical dressing)

I don't understand how the rest of the clue works.

Can you help me to learn more?

(Other definitions for plaster that I've seen before include "cake" , "Small wound dressing" , "Daub" , "one sticking on through injury?" , "Render (walls)" .)

I've seen this clue in The Sun.

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