Gladiator perhaps rashly downs arms (9)
I believe the answer is:
swordsman
'gladiator' is the definition.
(thesaurus)
'rashly downs arms' is the wordplay.
'rashly' is an anagram indicator (I've seen this in other clues).
'downs'+'arms'='downsarms'
'downsarms' is an anagram of 'SWORDSMAN'.
'perhaps' is the link.
(Other definitions for swordsman that I've seen before include "Sandworms (anag.)" , "Skilled fencer" , "Person using old weapon - fencer" , "Male fencer" , "Fighter with a blade" .)