The Proto-Anatolian word *ʔeku-
Word *ʔeku-
Meaning horse
See also Proto-Indo-European: *h₁ék̂wos ‘horse’
Hittite: ekku ‘horse’
C. Luwian: az-zu-wa- ‘horse’
Mitanni: ašwa ‘horse’
Lycian: esbe ‘horse’

Other words that might be of interest
*k̂won ‘dog’, *gwóʔu- ‘cow’, *HowV- ‘sheep’