roughrider

[n] - a horseman skilled at breaking wild horses to the saddle
Found on http://www.webdictionary.co.uk/definition.php?query=roughrider

Roughrider

Rough'rid`er noun One who breaks horses; especially (Mil.) , a noncommissioned officer in the British cavalry, whose duty is to assist the riding master.
Found on http://www.encyclo.co.uk/webster/R/97

roughrider

noun a horseman skilled at breaking wild horses to the saddle
Found on https://www.encyclo.co.uk/local/20974

Roughrider

• (n.) An officer or enlisted man in the 1st U. S. Volunteer Cavalry, a regiment raised for the Spanish war of 1898, composed mostly of Western cowboys and hunters and Eastern college athletes and sportsmen, largely organized, and later commanded, by Theodore Roosevelt. Sometimes, locally, a member of any of various volunteer cavalry commands ...
Found on http://thinkexist.com/dictionary/meaning/roughrider/

Roughrider

Formerly, a roughrider was a non-commissioned officer in the British cavalry, whose duty was to assist the riding master.
Found on http://www.probertencyclopaedia.com/browse/FR.HTM
No exact match found