Other forms: rags
A rag is a torn piece of old cloth, kept for cleaning rather than for wearing. An old shirt, cut up and thrown in a drawer.
The plural has a second sense meaning shabby clothes, so somebody in rags is destitute, and the rags-to-riches story is one of the oldest shapes in fiction. British English calls a poor newspaper a rag. There is a musical sense too, since a rag is a piece of ragtime. And a red rag to a bull describes anything guaranteed to provoke somebody.
A rag was a tuft of hair. Old Norse rǫgg meant shagginess or a tuft and Old English raggiġ meant shaggy or bristly, so the cloth is named for being ragged rather than for being cloth.
Proto-Germanic
*rawwa-
Old Norse
rǫgg — tuft; shagginess
Old English
ragg
Middle English
ragge
English, today
rag
Built from
From Middle English ragge, from Old English ragg (suggested by derivative raggiġ (“shaggy; bristly; ragged”)), from Old Norse rǫgg (“tuft; shagginess”), from Proto-Germanic rawwa-, probably related to rūhaz. Cognate with Swedish ragg. Related to rug.
Etymology from Wiktionary, CC BY-SA