The Collaborative International Dictionary
Plymouth Brethren \Plym"outh Breth"ren\ The members of a religious sect which first appeared at Plymouth, England, about 1830. They protest against sectarianism, and reject all official ministry or clergy. Also called Brethren, Christian Brethren, Plymouthists, etc. The Darbyites are a division of the Brethren.
Wikipedia
The Plymouth Brethren are a conservative, low church, nonconformist, Evangelical Christian movement whose history can be traced to Dublin, Ireland in the late 1820s, originating from Anglicanism. Among other beliefs, the group emphasizes sola scriptura, the belief that the Bible is the supreme authority for church doctrine and practice over and above "the [mere] tradition of men" (Mark 7:8). Brethren generally see themselves, not as a denomination, but as a network (or even as a collection of overlapping networks) of like-minded independent churches. (The Brethren would generally prefer that their gatherings be referred to as "assemblies," rather than "churches" but, in the interests of simplicity, this article uses both terms interchangeably.)
The movement refused to take any denominational name to itself, a stance that some still maintain. The title "The Brethren," however, is one that many of their number are comfortable with, in that the Bible designates all believers as "brethren". "[O]ne is your Master, even Christ; and all ye are brethren." (Matthew 23:8)
Usage examples of "plymouth brethren".
By Plymouth Brethren all so-called Christian festivals are (rightly, of course, from a historical standpoint) considered mere aliases of pagan feasts.
Jephson, was a preacher of the sect called Plymouth Brethren, and was one of the most respected citizens of Lowell.
Who then can live in London and reflect upon the fact that of its seven million souls, all but about a thousand Plymouth Brethren will be damned?
Yet the thousand Plymouth Brethren (who are the loudest in proclaiming that they will be the only ones saved) seem to {119} get on very well, thank you.
What will happen to the Hindus, the Buddhists, the atheists and the Plymouth Brethren?