_Sleck Stone, Meaning of_ (Vol. iii., p. 241.; Vol. iv., p. 394.).--The
expression _sleck-stone_ has, I think twice, been spoken of in "N. & Q."
as equivalent to whet-stone: this is a mistake. The first word is
possibly misprinted in the work in which it is found, but at all events
the thing intended is a _sleek-stone_ (Old Fr. _Calendrine_) an
implement formerly used by calendrers; often, if not always, made of
glass, and in shape much like a large mushroom: it is used reversed, the
stalk forming the handle. Those which I have seen were about four inches
in diameter, some more and some less. Sleek-stones are now, I believe,
entirely superseded by machinery.