WordNet (r) 3.0 (2006):

helmetflower
    n 1: a herbaceous plant of the genus Scutellaria which has a
         calyx that, when inverted, resembles a helmet with its
         visor raised [syn: skullcap, helmetflower]
    2: any of several orchids of the genus Coryanthes having racemes
       of a few musky-scented waxy flowers with a helmet-shaped lip
       process [syn: helmetflower, helmet orchid]
    3: a poisonous herb native to northern Europe having hooded
       blue-purple flowers; the dried leaves and roots yield aconite
       [syn: monkshood, helmetflower, helmet flower, Aconitum
       napellus]