little brother/sister

noun

: a brother/sister who is younger than one

Dictionary Entries Near little brother/sister

little brain

little brother/sister

little brown bat

See More Nearby Entries 

Cite this Entry

“Little brother/sister.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/little%20brother%2Fsister. Accessed 8 Feb. 2023.

Copy Citation

Share

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

Listen to the pronunciation of despot

See Definitions and Examples »

Test Your Vocabulary

Fashionable Words

  • dog-sunglasses-scarf
  • Which of these items is named for a deadly weapon?
True or False

Test your knowledge - and maybe learn something along the way.

TAKE THE QUIZ
Solve today's spelling word game by finding as many words as you can with using just 7 letters. Longer words score more points.

Can you make 12 words with 7 letters?

PLAY
Words at Play
Ask the Editors
Word Games