pj's

plural noun

ˈpē-ˌjāz

Synonyms of pj's next

next

: pajamas

Word History

Etymology

pajamas

First Known Use

1930, in the meaning defined above

Time Traveler

The first known use of pj's was in 1930

See more words from the same year

Browse Nearby Words

PJ

pj's

PK

See all Nearby Words

Cite this Entry

Style

“Pj's.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/pj%27s. Accessed 8 Dec. 2025.

Copy Citation

Kids Definition

pj's

plural noun

(ˈ)pē-ˈjāz

: pajamas

More from Merriam-Webster

Word of the Day

bravado

Listen to the pronunciation of bravado

See Definitions and Examples »

Get Word of the Day daily email!

Popular in Grammar & Usage

'Buck Naked' or 'Butt Naked'?

31 Useful Rhetorical Devices

The Difference Between 'i.e.' and 'e.g.'

Why is '-ed' sometimes pronounced at the end of a word?

What’s the difference between ‘cemetery’ and ‘graveyard’?

Popular in Wordplay

More Words with Remarkable Origins

17 Words for Dog Breeds

Ten More Words from Taylor Swift Songs

How 'Namaste' Entered The English Language

'Za' and 9 Other Words to Help You Win at SCRABBLE

Popular

'Buck Naked' or 'Butt Naked'?

More Words with Remarkable Origins

17 Words for Dog Breeds