Man starting on perilous journey in space after end of training! (5)
I believe the answer is:
groom
'man starting on perilous journey' is the definition.
The answer and definition can be both people as well as being singular nouns.
Perhaps they are linked in a way I don't understand?
'space after end of training' is the wordplay.
'space' becomes 'room' (room is a kind of space).
'after' says to put letters next to each other.
'end of' indicates one should take the final letters.
The last letter of 'training' is 'g'.
'room' put after 'g' is 'GROOM'.
'in' is the link.
Can you help me to learn more?
(Other definitions for groom that I've seen before include "Tender of horses" , "Recently-married man" , "Officer of Royal Household" , "Attendant for horses" , "school" .)