She may give a chap a light (5)
I believe the answer is:
vesta
'chap a light' is the definition.
The answer and definition can be both people as well as being singular nouns.
Perhaps you can see a link between them that I don't see?
'she may give a' is the wordplay.
I cannot quite see how this works, but
'she' could be 'esta' and 'esta' is found in the answer.
A single letter 'v' remains which might be clued in a way I don't see.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for vesta that I've seen before include "heavenly body" , "Stave (anag.)" , "Roman goddess of the hearth" , "Hearth goddess; a match" , "Asteroid; goddess; match" .)