We don't have synonyms for sidearms yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are sidewards, side arms and sidearm.
(n) :
A personal weapon, either a firearm (handgun type) or a cold weapon (such as a sword), carried on the hip in a belt, sheath, holster, etc., for rapid access.
(v) :
To throw a ball with one's arm roughly parallel to the ground.
(adv) :
With one's arm roughly parallel to the ground.
(n) :
A personal weapon, either a firearm (handgun type) or a cold weapon (such as a sword), carried on the hip in a belt, sheath, holster, etc., for rapid access.
(v) :
To throw a ball with one's arm roughly parallel to the ground.
(adv) :
With one's arm roughly parallel to the ground.