• noun:   a mythical bird said to breed at the time of the winter solstice in a nest floating on the sea and to have the power of calming the winds and waves
• noun:   a large kingfisher widely distributed in warmer parts of the Old World
• noun:   (Greek mythology) a woman who was turned into a kingfisher
• adjective:   idyllically calm and peaceful; suggesting happy tranquillity

  Example: "A halcyon atmosphere"

• adjective:   marked by peace and prosperity

  Example: "The halcyon days of the clipper trade"

Related words...