Definition of "pumice-stone" [pumice-stone]

• Same as pumice. (noun)

The Century Dictionary (Public Domain)

• "From the softness of a wet sponge to the hardness of pumice-stone there are infinite fine degrees of difference."
• "Scoriae, in a state of dust, like powdered pumice-stone, and grayish ashes as small as the finest feculae, were held in suspension in the midst of their thick folds."
• "Here and there stray blocks, numerous debris of basalt and pumice-stone, were met with."