Virgin martyr gets on train finally coming in (5)
I believe the answer is:
agnes
'virgin martyr' is the definition.
The definition suggests a singular noun which matches the answer.
'gets on train finally coming in' is the wordplay.
'gets on' becomes 'ages' (get on can mean to get older).
'finally' suggests the final letters.
'coming in' means one lot of letters goes inside another.
The final letter of 'train' is 'n'.
'ages' placed around 'n' is 'AGNES'.
Can you help me to learn more?
(Other definitions for agnes that I've seen before include "Lady" , "David's second wife" , "Tube for cables" , "lass" , "Scandinavian singer" .)