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From The Collaborative International Dictionary of English v.0.48:
Gladiolus \Gla*di"o*lus\, n.; pl. L. Gladioli, E. Gladioluses. [L. See Gladiole.] [1913 Webster] 1. (Bot.) A genus of plants having bulbous roots and gladiate leaves, and including many species, some of which are cultivated and valued for the beauty of their flowers; the corn flag; the sword lily. [1913 Webster] 2. (Anat.) The middle portion of the sternum in some animals; the mesosternum. [1913 Webster]