Calypso \Ca*lyp"so\ (k[.a]*l[i^]p"s[-o]), n. [The Latinized Greek name of a beautiful nymph.]

(Bot.) A small and beautiful species of orchid, having a flower variegated with purple, pink, and yellow. It grows in cold and wet localities in the northern part of the United States. The Calypso borealis is the only orchid which reaches 68[deg] N.

Source: Webster's Revised Unabridged Dictionary (1913)