The Old Norse word *ehwaz
Word *ehwaz
e h w a z
Meaning horse
See also Latin: equus ‘horse’
Proto-Indo-European: *h₁ék̂wos ‘horse’
Hittite: ekku ‘horse’
C. Luwian: az-zu-wa- ‘horse’
Mitanni: ašwa ‘horse’

Comments
See R. Palm, Vikingarnas språk, 2010, Nordstedts

Other words that might be of interest
bernu ‘bear’, bjørn ‘bear’, ‘cattle’, kýr ‘cow’, gagarr ‘dog’, rakki ‘dog’, hundr ‘dog, a hound’, fær ‘sheep’, svín ‘swine, pig’, freki ‘wolf’, vargr ‘wolf’, boli ‘bull’