- See halcyon.
- a classic or poetical title of kingfisher. Frequently written halcyon.
- [capitalized] A genus of kingfishers: just like Halcyon, 2.
- The specific name associated with the belted kingfisher of North America, Ceryle alcyon.
- an over-all title associated with kingfishers of the genus Halcyon and others of this subfamily Daceloninæ: as, the wood-alcyons, tree-alcyons, etc.
- Same ashalcyon.