Spacewalk initials (3)
I believe the answer is:
eva
'spacewalk initials' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for eva that I've seen before include "- Braun, Hitler's mistress" , "Female" , "Maria -- Duarte De Peron" , "Little --, US pop singer" , "-- Braun, Hitler mistress" .)