Greek mount (5)
I believe the answer is:
athos
(Other definitions for athos that I've seen before include "Mount - musketeer" , "Greece's holy mount" , "Greek monastic mountain" , "Literary musketeer" , "Comrade of Porthos and Aramis" .)
I believe the answer is:
athos
(Other definitions for athos that I've seen before include "Mount - musketeer" , "Greece's holy mount" , "Greek monastic mountain" , "Literary musketeer" , "Comrade of Porthos and Aramis" .)