sheath
noun
a case or covering for the blade of a sword, dagger, or the like.
sheaths
-
pluralof sheath.plural
The grammatical form denoting more than one person, place, thing, or idea.
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Standard CD20 antibodies are an established treatment for MS, with the antibodies targeting the renegade autoimmune cells that damage nerve sheaths.
From Barron's ● Jun. 3, 2026
It requires a level of physical brain development called mylenation — the growth of fatty sheaths that wrap around nerve cells, insulating them and allowing information to travel more quickly and efficiently through the brain.
From Los Angeles Times ● Jun. 24, 2025
The extraordinary darkness that sheaths the Atacama, which stretches for hundreds of miles in Chile’s north, has made it a haven for astronomers searching for planets and stars shimmering in the night sky.
From Salon ● Apr. 28, 2024
The delicate tissue sheaths that insulate each biological circuit lay in “disorganized clumps,” and throughout Mr. Card’s brain there was scarring and inflammation suggesting repeated trauma.
From New York Times ● Mar. 6, 2024
She wiped her knives on her leather breeches and returned them to their sheaths, then backed up and took a running start at the nearest cargo container.
From "Six of Crows" by Leigh Bardugo
