铁树开花 tiěshùkāihuā extremely rare event Origin Definitions Defs Strokes Stroke Words Sentences Sents 铁树 鐵樹 tiěshù sago cycad Common name for the sago palm or cycad, an evergreen plant with large, stiff, feathery leaves; it is known for blooming very rarely.开花 開花 kāihuā verb + noun to bloom to bloom; to blossom; to flower; to produce blossoms