ull: (Norse mythology) one of the Aesir known for his beauty and skill with bow and skis; son of Sif and stepson of Thor
norse deity: a deity worshipped by the ancient Norsemen
arsenic: a very poisonous metallic element that has three allotropic forms; arsenic and arsenic compounds are used as herbicides and insecticides and various alloys; found in arsenopyrite and orpiment and realgar