Candle/ˈkændl/ Definition 1 of 4Pro Tip 1/3Power Outage Use A candle is often used as a light source during electricity blackouts. When the lights went out, we used candles to see in the dark. Pro Tip 2/3Romantic Atmosphere Candles are commonly associated with romance and intimate settings. He set up candles around the room for a romantic dinner. Pro Tip 3/3Scented Varieties Scented candles can be used to freshen the air with pleasant aromas. She lit a lavender-scented candle to relax after a long day.