Noun

• S: (n) Alcyone, Halcyon ((Greek mythology) a woman who was turned into a kingfisher)
• S: (n) Halcyon, genus Halcyon (a large kingfisher widely distributed in warmer parts of the Old World)
• member holonym
• S: (n) Alcedinidae, family Alcedinidae (kingfishers)
• direct hypernym / inherited hypernym / sister term
• S: (n) bird genus (a genus of birds)
• S: (n) halcyon (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)
• direct hypernym / inherited hypernym / sister term

Adjective

• S: (adj) halcyon (idyllically calm and peaceful; suggesting happy tranquillity) "a halcyon atmosphere"
• S: (adj) golden, halcyon, prosperous (marked by peace and prosperity) "a golden era"; "the halcyon days of the clipper trade"