Term: hard hat: a lightweight protective helmet (plastic or metal) worn by construction workers
Broader: helmet: a protective headgear made of hard material to resist blows | Unrelated: tankage: the act of storing in tanks
Broader: helmet: a protective headgear made of hard material to resist blows | Unrelated: ectoplasm: the outer granule-free layer of cytoplasm
Broader: helmet: a protective headgear made of hard material to resist blows | Unrelated: repulsion: the force by which bodies repel one another
Broader: helmet: a protective headgear made of hard material to resist blows | Unrelated: coquille: seafood served in a scallop shell
Broader: helmet: a protective headgear made of hard material to resist blows | Unrelated: thoroughbred race: a race between thoroughbred horses
Broader: helmet: a protective headgear made of hard material to resist blows | Unrelated: megalobatrachus: giant salamanders; in some classifications included in the genus Cryptobranchus
Broader: helmet: a protective headgear made of hard material to resist blows | Unrelated: werdnig-hoffman disease: autosomal recessive disease in which the degeneration of spinal nerve cells and brain nerve cells leads to atrophy of skeletal muscles and flaccid paralysis; death usually occurs in early childhood
Broader: helmet: a protective headgear made of hard material to resist blows | Unrelated: plaque: (pathology) a small abnormal patch on or inside the body
Broader: helmet: a protective headgear made of hard material to resist blows | Unrelated: pratincole: Old World shorebird with long pointed wings and short legs; closely related to the coursers
Broader: helmet: a protective headgear made of hard material to resist blows | Unrelated: awning: a canopy made of canvas to shelter people or things from rain or sun