1. made a deep, loud, resonant sound
2. experienced rapid growth or expansion
3. spoke in a loud, deep voice

Examples

• Thunder boomed across the valley during the storm.
• The cannon boomed from the fortress walls.
• The tech industry boomed in the 1990s.
• Housing prices boomed after the new factory opened.
• The coach boomed instructions from the sideline.
• His voice boomed through the auditorium without a microphone.