1622, in the meaning defined above
probably alteration of obsolete codworm; from the case or tube in which it lives
Keep scrolling for more
Time Traveler for caddisworm
See more words from the same year
Cite this Entry
“Caddisworm.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/caddisworm. Accessed 27 Oct. 2020.
Comments on caddisworm
What made you want to look up caddisworm? Please tell us where you read or heard it (including the quote, if possible).
See Definitions and Examples »
Get Word of the Day daily email!
Namesakes Word Quiz
Can you spell these 10 commonly misspelled words?
Test Your Knowledge - and learn some interesting things along the way.
Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!
Where your vote comes from
Dictionary secrets, revealed!
Words from the week of 10/23/2020
Grab your popcorn and candy
We're intent on clearing it up
We're gonna stop you right there
How to use a word that (literally) drives some pe...
The awkward case of 'his or her'
When names become words and then we ask you about...
Not your children's farm quiz.
Listen to the words and spell through all three l...