Halcyon \Hal"cy*on\ (h[a^]l"s[i^]*[o^]n), n. [L. halcyon, alcyon, Gr. "alkyw`n, 'alkyw`n: cf. F. halcyon.] (Zool.) A kingfisher. By modern ornithologists restricted to a genus including a limited number of species having omnivorous habits, as the sacred kingfisher ({Halcyon sancta}) of Australia. [1913 Webster] Amidst our arms as quiet you shall be As halcyons brooding on a winter sea. --Dryden. [1913 Webster]