Related Clues:

• One might excite a gambler
• Tongue part
• Recommendation
• Bettor's boon
• Waitperson's reward
• Bellboy's bonus
• Bellhop's expectation
• Racetrack offering
• Brass band sound
• 20%, maybe
• Lose balance
• Leave something for the waitress
• 15%-20%, for a waiter
• Disturb, as the balance
• Advice on one's grip, for instance