helmet
/ˈhelmɪt/noun
1
- a hard or padded protective hat, various types of which are worn by soldiers, police officers, motorcyclists, sports players, and others（士兵、警察、摩托车手、运动员等戴的）头盔, 防护帽。
2
- Botany the arched upper part (galea) of the corolla in some flowers, especially those of the mint and orchid families【植】（尤指唇形科和兰科花朵的）花冠盔瓣, 唇瓣。
3
- （亦作 helmet shell）a predatory mollusc with a squat heavy shell, which lives in tropical and temperate seas and preys chiefly on sea urchins冠螺。
3.1
- Family Cassidae, class Gastropoda.冠螺科, 腹足纲。
派生词
helmeted
adjective词源
late Middle English: from Old French, diminutive of helme, of Germanic origin; related to HELM2.