Related Clues:

• Short railroad branch
• Pitchfork feature
• Prompt small audible noise from animal
• Short road or drive
• Incentive; branch line
• Prompt jet has cut time
• Plug point
• Down-at-heel wear for a rider
• Goading instrument on a rider's heel
• Stimulus for a London football team that's hot
• Goad; stimulus
• Publicity person no good? Supply a tip
• Mostly repel stimulus
• Smell around river something that is penetrative
• Lateral root