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seashell

American  
[see-shel] / ˈsiˌʃɛl /
Or sea shell

noun

seashells plural
  1. the shell of any marine mollusk.


seashell British  
/ ˈsiːˌʃɛl /

noun

  1. the empty shell of a marine mollusc

"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

Other Word Forms

Noun Inflected Forms

Etymology

Origin of seashell

before 900; Old English sǣscill (not recorded in Middle English ) see sea, shell

Explanation

Many sea creatures live inside hard, protective cases called seashells. If you find a seashell on the beach, think of it as a tiny abandoned home of a sea creature. You can also call a seashell a shell, although "sea" distinguishes ocean shells from those of freshwater mollusks. If you've ever walked on a beach, you've seen seashells, and maybe even collected some to take home (after checking to make sure no tiny creatures were living inside). Clams, snails, and oysters are all examples of animals that live in seashells. One of the most famous mentions of this word appears in the tongue twister: "She sells seashells by the seashore." Try saying that ten times, fast!

Keep Reading on Vocabulary.com

Vocabulary lists containing seashell

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.

See Examples For:

US Secret Service agents interviewed Comey last May about the seashell photo.

From BBC Apr. 28, 2026

Long sustainably-sourced seashell necklaces that looked like talismans.

From Los Angeles Times Jul. 2, 2025

Each nodule starts as a little fragment, perhaps a shark's tooth or a piece of seashell.

From Scientific American Aug. 15, 2023

“Marcel the Shell With Shoes On”: A tiny talking seashell with a single eye and stylish sneakers charms his way into the viewer’s heart with disarming ease in this stop-motion minor masterpiece.

From Seattle Times Dec. 20, 2022

They are actual human skulls whose faces have been “reconstituted” in tinted plaster, with pieces of seashell for the eyes.

From "History of Art, Volume 1" by H.W. Janson

Comey deleted the initial post, explaining that he came across the seashells while walking on the beach and thought they were a "political message".

From BBC Apr. 29, 2026

In a May 2025 Instagram post, Comey wrote, “cool shell formation on my beach walk,” under a photo of seashells arranged in the numbers “86 47.”

From The Wall Street Journal Apr. 28, 2026

The video also showed Kim presenting Lukashenko with a large mosaic vase bearing a portrait of the Belarusian, with the North Korean leader appearing to explain that crafting it involved around 30 seashells.

From Barron's Mar. 26, 2026

Comey has responded that this is all so much nonsense, and he was just sharing an image of seashells on the beach.

From Salon May 27, 2025

“We will march into the sea and out again. Under the waves we will ride seahorses, and mermaids will blow seashells to announce our coming, oh, oh, oh.”

From "A Dance with Dragons" by George R. R. Martin

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