noun
FAYS-buuk
noun
1
A major social-networking website and app where users connect with friends, share updates, and send messages.
"She posted her vacation photos on Facebook."
"He found his old classmate through Facebook."
verb
1
To message or contact someone through Facebook.
"Just facebook me the details later."
How to Use Facebook
Learner’s notesIn plain EnglishThe well-known social media platform for connecting with friends and sharing updates; also used loosely as a verb meaning to contact someone on it.
Common pairings
post on Facebook
Facebook friends
Facebook page
Word Forms
Facebooked past tense, facebooks plural, Facebooks plural, Facebooks singular
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She posted her vacation photos on _____.
Etymology
From "face" plus "book," echoing the printed student directories ("facebooks") that US colleges once handed out, which the website was originally modeled on.