Related Clues:

• Sound barrier
• The terrible twos, e.g.
• Distinct stage
• Explosive sound
• Part of growing up
• Economic upswing
• Project segment
• Microphone holder
• Moon stage
• Terrible twos, e.g.
• High time
• New moon, e.g.
• 'Bam!'
• Thunderous sound
• Detona-tion sound