Changing a reformed group of prisoners

• Convicts' work group

WordNet Word definitions in WordNet
n. a gang of convicts chained together

Wiktionary Word definitions in Wiktionary
n. (context US English) a group of convicts chained together to work outside the confines of a prison.

Longman Dictionary of Contemporary English Word definitions in Longman Dictionary of Contemporary English
noun EXAMPLES FROM CORPUS ▪ Citizens have loved his reintroduction of the chain gang and the Army-surplus tents he erected to ease jail overcrowding. ▪ He did a stint on a chain gang , and he became a professional boxer for a while. ▪ Tethered like a chain ...

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Chain \Chain\ (ch[=a]n), n. [F. cha[^i]ne, fr. L. catena. Cf. Catenate .] A series of links or rings, usually of metal, connected, or fitted into one another, used for various purposes, as of support, of restraint, of ornament, of the exertion and transmission ...

Wikipedia Word definitions in Wikipedia
In the sport of cycling , a chain gang is a group of cyclists in a close knit formation usually of two parallel lines drafting behind the leader. The formation comes from the fact that it is harder to cycle at the front of a group than in the shelter of ...