rusticle n. a stalactite-like underwater accretion formed by cascading rust on sunken iron ships. Editorial Note: Nearly all citations found are associated with the RMS Titanic. Etymological Note: rust + icicle (source: Double-Tongued Dictionary)
Further reading
Cat hair may be something you brush off, but cat hair is also a slang term that means “money.” In the same way, cat beer isn’t alcoholic — some people use cat beer as a joking term for “milk.” And imagine walking on a...
Brian in San Antonio, Texas, wonders about the origin of the pinking in the term pinking shears. Such shears cut an even, zigzag pattern that keeps cloth from fraying at the edges. Pinking likely comes from French piquer, meaning to...