verb (used with object), un·horsed, un·hors·ing.
Examples from the Web for unhorse
If they win, they grab at booty; if they lose, they unhorse and pilfer their own side!The Bbur-nma in English|Babur, Emperor of Hindustan
And they charged each other, and fought all that day until the evening, and neither of them was able to unhorse the other.The Mabinogion|Lady Charlotte Guest
It took, indeed, the vast shock of the Civil War to unhorse the optimists.The American Language|Henry L. Mencken
Thus the point of the fir-tree caught him upon the shoulder and came near to unhorse him.The Blue Flower, and Others|Henry van Dyke
If thou turnest to flee, he will overtake thee, and if thou abidest where thou art, he will unhorse thee.The Lilac Fairy Book|Andrew Lang