From Longman Dictionary of Contemporary Englishgladiolusglad‧i‧o‧lus /ˌɡlædiˈəʊləs $ -ˈoʊ-/ noun (plural gladioli /-laɪ/) [countable] DLGHBPa tall garden plant with long leaves and large brightly-coloured flowers
Examples from the Corpus
gladiolus• Plant gladiolus corms in batches to provide a succession of blooms. 