Possibly dream of bearing weapons (5)
I believe the answer is:
armed
'bearing weapons' is the definition.
(I've seen this before)
'possibly dream' is the wordplay.
'possibly' indicates an anagram.
'dream' anagrammed gives 'ARMED'.
'of' is the link.
(Other definitions for armed that I've seen before include "prepared to shoot?" , "Carrying a weapon" , "ready to fight" , "Gave weapon" , "Carrying a gun" .)