Woman in jumble-sale? (4)
I believe the answer is:
elsa
'woman' is the definition.
'jumble-sale?' is the wordplay.
'jumble' indicates an anagram.
'sale' anagrammed gives 'ELSA'.
'in' acts as a link.
(Other definitions for elsa that I've seen before include "Famous lioness" , "Lioness (born free in Kenya)" , "Girl" , "___ Schiaparelli, Italian-born French fashion designer d. 1973" , "Big cat" .)