sea cucumber

noun

Definition of sea cucumber

  1. :  any of a class (Holothurioidea) of echinoderms having a tough muscular elongate body with tentacles surrounding the mouth —called also holothurian

Illustration of sea cucumber

First Known Use of sea cucumber

1841


SEA CUCUMBER Defined for Kids

sea cucumber

noun

Definition of sea cucumber for Students

  1. :  a sea animal that is related to the starfish and has a flexible muscular body shaped like a cucumber


Learn More about sea cucumber


Seen and Heard

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

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

to become worse as time passes

Get Word of the Day daily email!

Test Your Vocabulary

The Emoji Quiz

  • emoji-the-quiz
  • What phase of the moon is this: 🌖 ?
Spell It

Can you spell these 10 commonly misspelled words?

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!