rogue's yarn
In real, traceable use. Part of the curated seed collection; community review is coming.
Sense 1
A thread of red, blue or gold worsted, worked into the ropes manufactured in the government Royal dockyards, to identify them if stolen. Red for Pompey (Portsmouth), Blue for Guz (Plymouth), Gold for Chatham. Also a blue thread worked into canvas for the same purpose.
Register: slang
Sources & notes
Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-07-30 via kaikki.org).
Sense 2
a thread of red or blue worsted, worked into the ropes manufactured in the Government dockyards, to identify them if stolen. Also a blue thread worked into canvas, for the same purpose.
Era: ca. 1874 (Victorian)
Sources & notes
Historical definition reproduced from Hotten’s The Slang Dictionary (1874, public domain; Project Gutenberg #42108, retrieved 2026-07-31). Reflects the attitudes of its era.
Common questions
What does “rogue's yarn” mean?
A thread of red, blue or gold worsted, worked into the ropes manufactured in the government Royal dockyards, to identify them if stolen. Red for Pompey (Portsmouth), Blue for Guz (Plymouth), Gold for Chatham. Also a blue thread worked into canvas for the same purpose.
Is “rogue's yarn” formal or informal?
rogue's yarn is generally slang.