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floatstone

American  
[floht-stohn] / ˈfloʊtˌstoʊn /

noun

Masonry.
  1. a stone for rubbing bricks to be gauged.


Etymology

Origin of floatstone

First recorded in 1695–1705; float + stone

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Dropped in the center of a continent between four wary opponents, I cultivated diplomatic ties with neighbors, built up reserves of petroleum, titanium, and hovering alien "floatstone," and made myself indispensable to those who would attack me.

From The Verge