| Noun | 1.helmetflower - a herbaceous plant of the genus Scutellaria which has a calyx that, when inverted, resembles a helmet with its visor raisedskullcapherb, herbaceous plant - a plant lacking a permanent woody stem; many are flowering garden plants or potherbs; some having medicinal properties; some are pests | | 2.helmetflower - any of several orchids of the genus Coryanthes having racemes of a few musky-scented waxy flowers with a helmet-shaped lip processhelmet orchidorchid, orchidaceous plant - any of numerous plants of the orchid family usually having flowers of unusual shapes and beautiful colorsCoryanthes, genus Coryanthes - small genus of tropical American epiphytic or lithophytic orchids | | 3. helmetflower - a poisonous herb native to northern Europe having hooded blue-purple flowers; the dried leaves and roots yield aconiteAconitum napellus, helmet flower, monkshoodaconite - any of various usually poisonous plants of the genus Aconitum having tuberous roots and palmately lobed leaves and blue or white flowers |