In danger, as a condemned witch may be (7)
I believe the answer is:
atstake
'in danger' is the definition.
(I've seen this before)
'a condemned witch may be' is the wordplay.
'a condemned witch may' becomes 'ats' (I can't justify this - if you can you should give a lot more credence to this answer).
'be' becomes 'take' (taking is a kind of being).
'ats'+'take'='ATSTAKE'
'as' acts as a link.
Can you help me to learn more?
(Other definitions for atstake that I've seen before include "In danger" , "soon to be Protestant martyr?" .)