any of various protective head coverings, esp made of a hard material to resist impact
a covering or enclosing headpiece of ancient or medieval armour
a hood-shaped petal or sepal of a plant
a mollusc with a thick ridged shell, found in tropical or temperate seas and preying on sea urchins: family Cassidae
helmeted adj
[early French helmet, dimin. of helme helmet, of Germanic origin]