Woman in coveralls (4)
I believe the answer is:
vera
'woman' is the definition.
(a woman's name)
'in coveralls' is the wordplay.
'in' says the answer is hidden in the clue.
'VERA' is hidden in the letters of 'coveralls'.
(Other definitions for vera that I've seen before include "A girl to rave about" , "and 15: Singing Dame" , "& 16 'The Forces' Sweetheart'" , "Girl's name (meaning faith or true)" , "Duckworth, Lynn" .)