Crossword Genius

What female tanner may put on small strip (8)

Ross

I believe the answer is:

sundress

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

'what female tanner may' is the definition.
I can't judge whether this definition defines the answer.

'on small strip' is the wordplay.
'on small' becomes 's' (abbreviation - e.g. clothes size. I am not sure about the 'on' bit.).
'strip' becomes 'undress' (synonyms).
's'+'undress'='SUNDRESS'

'put' is the link.

Can you help me to learn more?

(Other definitions for sundress that I've seen before include "evident when the heat is on" , "Summer frock" .)

I've seen this clue in The Guardian.
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