Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Medical
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

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

1841

First Known Use of sea cucumber

1841

Rhymes with sea cucumber


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).

WORD OF THE DAY

a smart aleck

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

image567572573

Which of these is a synonym of unctuous?

prompt oily maudlin angry
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