sidearm

Short definition from Wiktionary

Noun

1. 1
   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

1. 1
   To throw a ball with one's arm roughly parallel to the ground.

Adverb

1. 1
   With one's arm roughly parallel to the ground.