adam’s-needle

noun

1. a yucca, Yucca filamentosa, grown as an ornamental, having sword-shaped leaves and a tall spike of creamy-white, bell-shaped flowers.

noun

1. a North American liliaceous plant, Yucca filamentosa, that has a tall woody stem, stiff pointed leaves, and large clusters of white flowers arranged in spikes. It is cultivated as an ornamental plantSee also Spanish bayonet