Related Clues:

• It may dig in deep
• Tooth or hair part
• Etymologist's interest
• Arena cheer
• Sound from a fan?
• Roar of approval
• One may be square
• College cheer
• Crowd noise
• Cheerleader's shout
• Bicuspid part
• "Go team!"
• ARCO arena sound
• Sidelines shout
• Repeated cheer