WordNet sense 1 (any of numerous plants of the genus Gladiolus native chiefly to tropical and South Africa having sword-shaped leaves and one-sided spikes of brightly colored funnel-shaped flowers; widely cultivated):

glad, gladiola, gladiolus

WordNet sense 2 (plants with sword-shaped leaves and erect stalks bearing bright-colored flowers composed of three petals and three drooping sepals):

flag, fleur-de-lis, iris