Merriam-Webster Logo
SINCE 1828
Menu
×

An Encyclopædia Britannica Company

sand dollar

noun

Definition of sand dollar

  1. :  any of numerous flat circular sea urchins (order Clypeasteroida) that live chiefly in shallow water on sandy bottoms

See sand dollar defined for English-language learners

See sand dollar defined for kids

Read the Latest from M-W

alt-5949565fc7d94
'Negging' Moves Beyond The Bar
supreme-court-at-dusk
Trending: SCOTUS: 'Bona Fide' relationships
decimate-video
Is it wrong to use 'decimate' to mean 'destroy'?
istock-refers-to-this-as-a-tumble-of-strawberries-which-sounded-pretty-nice-to-us
June 2017 Words of the Day Quiz

Illustration of sand dollar

First Known Use of sand dollar

1884

SAND DOLLAR Defined for English Language Learners

sand dollar

noun

Definition of sand dollar for English Language Learners

  • : the round, flat shell of a small sea animal; also : the small sea animal itself

SAND DOLLAR Defined for Kids

sand dollar

noun

Definition of sand dollar for Students

  1. :  a flat round sea urchin

Learn More about sand dollar

  1. See words that rhyme with sand dollar Britannica.com: Encyclopedia article about sand dollar

Seen and Heard

What made you want to look up sand dollar? Please tell us where you read or heard it (including the quote, if possible).

show hide

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

WORD OF THE DAY

scapegrace

play

an incorrigible rascal

Get Word of the Day daily email!

TRENDING NOW

  1. bona fide Made in good faith

  2. surrogate mother From TMZ to the dictionary.

  3. zealot A fanatical partisan

  4. stonewall to be uncooperative, obstructive, or evasive

  5. scurrilous Containing obscenities, abuse, or slander

SEE ALL

BROWSE DICTIONARY

sand dollar

WORD GAMES

Take a 3-minute break and test your skills!

  • istock-refers-to-this-as-a-tumble-of-strawberries-which-sounded-pretty-nice-to-us
  • Which is a synonym of garner?
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

Words at Play

alt-5949565fc7d94
'Negging' Moves Beyond The Bar

Not just for pick-up artists anymore

alt-5947fc40f1b5c
In Tech, What Does 'K' Mean?

A buzzword with a long history.

alt-5951697e1a410
When To Use 'Specious' vs. 'Spurious'

These similar words are not interchangeable

alt-594bf2ec5f26e
Quick: Read This!

'Quick' once had a very different meaning

Ask the Editors

decimate-video
Is it wrong to use 'decimate' to mean 'destroy'?

Language changes

serial-comma
The Serial Comma

Why don't they call it the Merriam-Webster comma?

video-irregardless-grammar-peeve-blend-of-the-synonyms-irrespective-and-regardless
Irregardless

It is in fact a real word (but that doesn't mean you should use it).

video-moose-goose-weird-plurals
Weird Plurals

One goose, two geese. One moose, two... moose. What's up with that?

Word Games

istock-refers-to-this-as-a-tumble-of-strawberries-which-sounded-pretty-nice-to-us
June 2017 Words of the Day Quiz

Summer's first WOTD quiz.

Take the quiz
alt-5941ad7527c3c
Yearbook Superlatives Quiz

Is that your picture under "Largest Vocabulary"?

Take the quiz
Name That Thing
Name That Thing

Test your visual vocabulary with our 10-question challenge!

Take the quiz
SCRABBLE® Sprint
SCRABBLE® Sprint

SCRABBLE® fans, sharpen your skills!

Play the game