any of various forms of protective head covering worn by soldiers, firefighters, divers, cyclists, etc.
medieval armor for the head.
(in fencing, singlestick, etc.) a protective device for the head and face consisting of reinforced wire mesh.
anything resembling a helmet in form or position.
- hel·met·ed, adjective
- hel·met·like, adjective
- un·hel·met·ed, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024
How to use helmet in a sentence
These goggles—in conjunction with a lightweight helmet, huge zippers on my ski pants, and air-permeable insulation layers—allow me to just rip off my skins, throw them in my pack, adjust my boots and bindings, and descend as fast as possible.
Scientists from Kernel, a neurotech company near Los Angeles, have invented a helmet, just now hitting the market, that is essentially a portable brain scanner that can pick up activity in certain brain areas.Can privacy coexist with technology that reads and changes brain activity? | Laura Sanders | February 11, 2021 | Science News
Glancey’s attorney didn’t answer questions about which helmet the plaintiff bought, or when.
In a melee at the West Terrace of the Capitol building, Fanone had his helmet removed and was dragged down a set of steps by rioters.Super Bowl highlights: Bucs celebrate championship, Tom Brady wins MVP | Des Bieler, Mark Maske, Chuck Culpepper | February 8, 2021 | Washington Post
City law requires users to wear helmets and have a driver’s license.More mopeds may be coming to the District this spring | Luz Lazo | January 27, 2021 | Washington Post
Sweat poured from underneath his helmet and down the thin points of his sandy blond hair.
The job done, Ryan went on to the next job with that thin black band around his helmet, as always.
Luckily for us, Mr. Hennessey had been attempting to document his bike trip with a helmet-fastened GoPro camera.Viral Video of the Day: Attempted Robbery Caught on Helmet Cam | Jack Holmes | September 18, 2014 | THE DAILY BEAST
Your Advanced Combat helmet weighs seven pounds and the back pads press furiously into the corners of your skull.Whatever You Do Someone Will Die. A Short Story About Impossible Choices in Iraq | Nathan Bradley Bethea | August 31, 2014 | THE DAILY BEAST
Witnesses also reported seeing a man on a motorcycle with a rare helmet in the area shortly before the bodies were discovered.Alps Murder Twist: Iraqi Wife Had Secret American Ex-Husband Who Died on the Same Day | Barbie Latza Nadeau | July 9, 2014 | THE DAILY BEAST
The Spaniard was standing in the dim light of the hall, dressed in sombre black armor; but the red plumes danced on his helmet.God Wills It! | William Stearns Davis
Spitzhase had begun to feel very uncomfortable, for now the miner proceeded to adjust the glass helmet to his head.Black Diamonds | Mr Jkai
A golden shield had he, and a gold-wrought helmet, & a short red kirtle over his shirt of mail.The Sagas of Olaf Tryggvason and of Harald The Tyrant (Harald Haardraade) | Snorri Sturluson
It is clear from literary evidence that the helmet (helm) and coat of chain mail (byrne) were also in common use.
Of course we must do so for the future, though I hope to be able to borrow a Prussian helmet with luck before I come home again.Letters of Lt.-Col. George Brenton Laurie | George Brenton Laurie
British Dictionary definitions for helmet
a piece of protective or defensive armour for the head worn by soldiers, policemen, firemen, divers, etc
biology a part or structure resembling a helmet, esp the upper part of the calyx of certain flowers
- helmeted, adjective
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012