v. Of a horse, to neigh softly, to make a breathy whinny.
The Century Dictionary and Cyclopedia
To neigh; whinny; bleat.
To giggle; snigger.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
v. make a characteristic sound, of a horse
n. the characteristic sounds made by a horse
Word Usage
"Mike's face is exactly like the terrier in the old picture, and he sits up and gives his paw just like Bonneau, and I never saw him have any instruction; and as for voice, I wish you could hear Bonfire's "whicker" to me in the stable or elsewhere."