Other forms: neighing
To neigh is to make the long high call a horse makes. The horse neighed, a loud neigh, neigh in the field.
It is one of a family of horse sounds with their own names: a whinny is softer, a nicker is a low greeting, and a snort is through the nose. The word imitates the sound, and it has done so since Old English.
1verbneighTo make the long high call a horse makes.
“The horses neighed loudly when the barn caught fire.”
neigh is a sound.
Old English hnaegan imitates the sound, from a Germanic root of the same kind.
Proto-Germanic
*hnajjaną — to neigh
Proto-West Germanic
*hnaijan
Old English
hnǣġan
Middle English
neyen
English, today
neigh
Middle English neyen, from Old English hnǣġan, from Proto-West Germanic hnaijan, from Proto-Germanic hnajjaną (“to neigh”). Cognate with dialectal Dutch neien, Middle Low German neigen, Swedish gnägga, Icelandic hneggja.
Etymology from Wiktionary, CC BY-SA