Reverse Dictionary: HELMET

NOUNS
ARMOR the steel helmet → 1944 services’ sl. (Bk.)
BASH HAT a safety helmet; a hard hat → 1981 Aust. colloq. (Bk.)
BASIN a helmet → c1300 obs.
BATTLE BOWLER a steel helmet → World War II Amer. sl.
BONE DOME a protective helmet; a crash helmet → 1930s orig. aviators’ usage, then used by motorcyclists (1950s), and cyclists (1980s)
BRAIN BUCKET a safety helmet; a motorcycle helmet → 1954 sl.
BUMP CAP a safety helmet → 1981 Aust. colloq. (Bk.)
CASK a head-piece or helmet → 1580 obs.
CHAMBER POT a steel helmet → World War II Amer. sl.
COVER OF THE EYES the visor of a helmet → 1300 obs.
CRASH HAT a crash helmet → Brit. sl.
HEAD-PIECE a piece of armour for the head; a helmet → 1535
LID a hat; often applied to a soldier’s steel helmet or a motorcyclist’s crash helmet → 1896 sl.
SKID LID 1. a motorcycle helmet; a safety helmet or crash helmet → 1958 US sl.
2. a paratrooper’s helmet → 1991 US sl.
STACKHAT a crash helmet → 1985 Aust. sl.
STEEL POT a military helmet → 1970s US Army sl.
TIN DERBY a steel helmet → World War I Amer. sl.
TIN DIP a steel helmet → World War I Amer. sl.
TIN HAT a soldier’s steel helmet → 1903 US sl.
TRENCH DERBY a helmet → World War I Amer. sl.
UMBER the visor of a helmet → a1400 obs.
UMBREL the visor of a helmet → c1470 obs.
UMBRERE the visor of a helmet → a1400 obs.
UMBRIER the visor of a helmet → a1400 obs.
UMBRIL a part of a helmet projecting above the eyes; a visor → 1824