Added 9 October 2026 sidearm /ˈsaɪdˌɑɹm/ noun Categories: Describing WordsRare Words noun ! Definition from Wiktionary (CC BY-SA). Pronunciation from Wiktionary, via Kaikki.org. More about sidearm at Wordnik → Where our words come from → 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. verb To throw a ball with one's arm roughly parallel to the ground. adverb With one's arm roughly parallel to the ground. Origin From side + arm. From Wiktionary, via Kaikki.org (CC BY-SA) Related Words: handgunpistolgunfirearmrevolverrifleshotgunweaponironpoorholstered Back to today's word