[3] árvakr (m.) ‘alert one’: Or ‘one who is awake early’. This heiti is known from other sources as the mythical name of one of the horses of the Sun (see Þul Hesta 3/4 and Note there). As an ox-heiti the name occurs only in the present þula. The A, B variant árvǫrðr ‘early-guardian’ is not attested elsewhere.