ˀwn - to be at ease, to enjoy a life of ease and tranquility; to be grave, steady, calm
(Lane 129)
Arabic
ˀibnu ˀāwan - (pl. banātu ˀāwān) jackal
(BK 1 72, Lane 131)
More details see in Hommel 1879: 306-7. A detailed discussion can also be found in LA where the term is thought to be derived from the sound wāwā produced by the animal.