1. past tense of vapour; converted into vapor or steam
Usage: British spelling
2. past tense of vapour; talked boastfully or made empty threats
Usage: archaic; British spelling

Examples

• The water vapoured quickly in the intense heat.
• The morning dew vapoured as the sun rose higher.
• The old knight vapoured about his past victories.
• He vapoured endlessly but never followed through on his threats.
• The liquid nitrogen vapoured instantly when exposed to room temperature.