Passing words inspiring leader of Russian Revolution (5)
I believe the answer is:
orbit
'revolution' is the definition.
(orbit is a kind of revolution)
'passing words inspiring leader of russian' is the wordplay.
'passing words' becomes 'obit' (I am not sure about this - if you are sure you should believe this answer much more).
'inspiring' indicates putting letters inside.
'leader of' indicates taking the first letters.
The initial letter of 'russian' is 'r'.
'obit' going around 'r' is 'ORBIT'.
Can you help me to learn more?
(Other definitions for orbit that I've seen before include "Rotating path" , "area of activity" , "Moon's track" , "Path of a planet or satellite" , "E.g. planetary movement" .)