Alum Rock

[ al-uhm ]

noun

1. a town in W central California, near San Jose.

Example Sentences

Alum-rock, or alum-stone, is a species of impure alunite, and is not of very common occurrence.

From Project Gutenberg

Sometimes it was scarcely a foot broad, and at its sides rose a smooth alum rock of two hundred feet perpendicular height.

From Project Gutenberg