The term 'Spiral-horned Beasts' refers to a family of African antelopes known as the Bovidae, which includes the Eland (6 letters). The Eland is the largest species of antelope and can weigh up to 1, 000 kilograms. They are found in savannahs and woodlands across much of Africa and have distinctive spiral horns that can reach up to two meters in length. They are herbivores and feed on grasses, leaves, and other vegetation.