Answer:

unhorse

Answer	Crossword Clue
UNHORSE	Outjoust
UNHORSE	Defeat in a joust
UNHORSE	Knock off, in a medieval contest

UNHORSE	Topple, as a jouster
UNHORSE	Knock down in a joust
UNHORSE	Win the joust, perhaps
UNHORSE	Defeat, in a joust
UNHORSE	Throw, as a rider
UNHORSE	Defeat in jousting
UNHORSE	Throw
UNHORSE	Unharness.

UNHORSE	Overthrow.
UNHORSE	Ground, in a way
UNHORSE	Overthrow
UNHORSE	Win at jousting
UNHORSE	Dislodge an equestrian
UNHORSE	Dislodge from a saddle
UNHORSE	Dislodge a jockey
UNHORSE	Throw, as a buckaroo

UNHORSE	Dismount
UNHORSE	Dismount from a steed
UNHORSE	Knock from the saddle
UNHORSE	Handicap Richard III
UNHORSE	Defeat at jousting
UNHORSE	Topple in a tilt
UNHORSE	Beat in the joust