Related Clues:

• Railroading nail
• Sports-shoe feature
• Sharp rise
• Volleyball maneuver
• Add liquor to, as punch
• Sudden increase on a graph
• Abrupt increase on a graph
• EEG peak
• Berton's The Last _____
• Anomalous rise
• Unusually high 17-Across
• Lace
• Peak on a graph
• 'Manswers' network
• Court smash