Related Clues:

• Coachman's line
• Faint amount
• Buggy driver's control
• Tiny amount, as of an element
• Harness attachment
• Smidgen of evidence
• It may hold your horses
• Jock strap?
• Equestrian's control
• Stage lead?
• Copy over?
• Tiniest amount
• Identify a caller
• Line from a hack
• Control device