væpne (imperative væpn or væpne, present tense væpner, passive væpnes, simple past and past participle væpna or væpnet, present participle væpnende)
væpne (present tense væpnar, past tense væpna, past participle væpna, passive infinitive væpnast, present participle væpnande, imperative væpne/væpn)
From Old Norse væpna