The Collaborative International Dictionary
Restiff
Restiff \Rest"iff\, n. A restive or stubborn horse. [Obs.]
Restiff
Restiff \Rest"iff\, a. Restive. [Obs.]
Wiktionary
restiff
a. unwilling to do something n. (context obsolete English) A restive or stubborn horse.
Usage examples of "restiff".
One of the horses of the last team was restiff, and it became necessary to restrain him by an additional curb before we ventured into the streets of London.