The lady swallows a ring intended for her foot (4)
I believe the answer is:
shoe
'intended for her foot' is the definition.
I can't tell whether this defines the answer.
'the lady swallows a ring' is the wordplay.
'the lady' becomes 'she' ('she' refers to a woman).
'swallows' is an insertion indicator.
'a ring' becomes 'o' (letter resembling a ring).
'she' enclosing 'o' is 'SHOE'.
Can you help me to learn more?
(Other definitions for shoe that I've seen before include "Box for holding and dispensing from pack of cards" , "Perhaps casual" , "What's worn" , "From which playing cards are dealt one at a time" , "Foot-covering" .)