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Old English hors
Proto-Germanic *hrussą (inherited)
Proto-Indo-European *kers- (derived)

English horse (inherited)
English horseheal (mention)
English Horsford (derived)
Old English horshwæl (compound)
Old English horscamb (affix)
Old English horsminte (affix)
Old English horsc (doublet)
Old English horsern (affix)
Old English horselene (affix)
Northern East Cree ᐋᐦᐋᔅ (derived)
Middle English hors (inherited)
Middle English horshelne (mention)
French rosse (cognate)
Old Swedish russ (cognate)
Old Norse hross (cognate)
Scots horse (inherited)