bluestone

A bluish-grey sandstone commonly used for paving and building purposes.

• 🇨🇳蓝灰色砂岩，常用于铺路和建筑。也可指硫酸铜（俗称蓝矾）或蓝灰砂岩石材。

1. Bluish-grey sandstone B2 formal

   A type of bluish-grey sandstone commonly used for paving stones, building materials, and architectural features.

   • The garden path was laid with beautiful bluestone slabs.
   • Many historic buildings in the region are constructed from local bluestone.
   • Bluestone is prized for its durability and attractive color.

   🇨🇳蓝灰色砂岩

• bluestones plural form
• bluestones' possessive plural form
• bluestone's possessive singular form