newsgroup

[nooz-groop, nyooz‐]
noun
  1. a place on a computer network, especially within Usenet, that maintains an online discussion group on a specific topic: newsgroups for movies.
Compare message board.

Origin of newsgroup

First recorded in 1985–90
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for newsgroup

newsgroup

noun
  1. computing a forum where subscribers exchange information about a specific subject by electronic mail
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for newsgroup
n.

by 1985, from news (n.) + group (n.).

Online Etymology Dictionary, © 2010 Douglas Harper