1. Idyllically calm and peaceful; suggesting happy tranquillity
   "a halcyon atmosphere"
    
2. Marked by peace and prosperity
   "the halcyon days of the clipper trade";
   - golden, prosperous

1. 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
   "Ancient sailors told stories of the halcyon bringing peace to stormy seas"

1. A large kingfisher widely distributed in warmer parts of the Old World
   - genus Halcyon
    
2. (Greek mythology) a woman who was turned into a kingfisher
   - Alcyone

Derived forms: halcyons

See also: calm, happy, peaceable, peaceful, serene, tranquil

Type of: bird genus, mythical being

Part of: Alcedinidae, family Alcedinidae

Encyclopedia: Halcyon, California