Entry 2 senses · 2 variants Webster, 1913 Unarm /ən-ärm'/ · Un·arm · IPA /ʌˈnɑɹm/ v. t. v. i. 01 v. t. To disarm. 1. To disarm. 02 v. i. To put off, or lay down, one's arms or armor. 1. To put off, or lay down, one's arms or armor.