1. to announce or signal the approach or arrival of something
Usage: past tense of herald
2. to be a sign that something important is about to happen
Usage: past tense of herald

Examples

• The dawn chorus heralded the start of spring.
• Dark clouds heralded the approaching storm.
• The invention was heralded as a breakthrough in medicine.
• Trumpets heralded the king’s arrival at the castle.
• The discovery heralded a new era in space exploration.
• Rising unemployment heralded economic troubles ahead.