Related Clues:

• Upsurge in activity
• Sound made when passing the sound barrier
• Cannon sound
• Economic prosperity
• Surge in sales
• Business owner's delight
• Carriage seat gives the sound of heavy wheels
• The noise of increased business activity?
• Time of great prosperity - hear the sound
• Period of prosperity or sonic sound
• Utter in deep voice, of have a slang fight - in the jungle?
• Resonant sound, like artillery
• When business is great, opposite to bust
• Horizontal spar on board
• Big bang sound