|1.||[ adjective ] joyful and carefree|
"halcyon days of youth"
|2.||[ adjective ] idyllically calm and peaceful; suggesting happy tranquillity|
"a halcyon atmosphere"
|3.||[ noun ] (biology,zoology) a large kingfisher widely distributed in warmer parts of the Old World|
|Related terms:||bird_genus Alcedinidae|
|4.||[ 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|
|5.||[ noun ] (Greek mythology) a woman who was turned into a kingfisher|
|Related terms:||mythical_being Greek_mythology|
|6.||[ adjective ] marked by peace and prosperity|
"a golden era" "the halcyon days of the clipper trade"