Related Clues:

• Horse put out to pasture, maybe
• Carp at
• Pester persistently
• Remind too much
• Subject of a tipster's tip
• "Camptown Races" winner
• Slowpoke at the track
• Over-the-hill horse
• Not just nudge
• Be a pest
• Not much of a racehorse
• Badger, in a way
• Horse unlikely to win a race
• Remind annoyingly
• Keep bothering