/hal"see euhn/ , adj. Also, halcyonian /hal'see oh"nee euhn/ , halcyonic /hal'see on"ik/ .
1. calm; peaceful; tranquil: halcyon weather.
2. rich; wealthy; prosperous: halcyon times of peace.
3. happy; joyful; carefree: halcyon days of youth.
4. of or pertaining to the halcyon or kingfisher.
n.
5. a mythical bird, usually identified with the kingfisher, said to breed about the time of the winter solstice in a nest floating on the sea, and to have the power of charming winds and waves into calmness.
6. any of various kingfishers, esp. of the genus Halcyon.
7. ( cap. ) Class. Myth. Alcyone (def. 2).
[ 1350-1400; halkyón, pseudo-etymological var. of ALKYÓN kingfisher; r. ME alceon, alicion alcyon ]
Syn. 1. serene, placid, pacific, untroubled.