helmet

noun

• 1a hard or padded protective hat, various types of which are worn by soldiers, police officers, motorcyclists, sports players, and others.

• 2 Botany the arched upper part (galea) of the corolla in some flowers, especially those of the mint and orchid families.

• 3 (also helmet shell) a predatory mollusc with a squat heavy shell, which lives in tropical and temperate seas.

  • Family Cassidae, class Gastropoda