Related Clues:

• Racehorse, to a bettor
• Really get on
• Dobbin
• Emulate Xanthippe
• Badger or hound
• Bitch and moan
• Horse at the track
• Old gray mare, e.g.
• Pester constantly
• Act like a shrew
• Remind persistently
• Say 'Do this,' 'Do that' ... blah, blah, blah
• Old equine
• Re-re-re-remind
• Keep bugging