Related Clues:

• Horse-and-buggy handful
• Curbs
• Part of a halter
• Controlling straps
• Steers a steed
• Head of hair
• Bison's pride
• Some locks
• Exert restraint
• Controlling factors?
• Trigger locks?
• Coachman's line
• Horse hair
• Pride of lions
• Buggy driver's control