IPA: /ˈbluːstəʊn/
KK: /ˈbluːstoʊn/
A type of stone that is bluish-gray in color, often used for paving and construction.
The pathway was made of beautiful bluestone that complemented the garden.
Bluestone is formed from "blue" (from Old English "blǣw", meaning the color of the sky or sea) and "stone" (from Old English "stan", meaning a solid mineral matter). The word "bluestone" refers to a type of stone that has a blue hue or color.
Think of the color 'blue' and 'stone' to remember that 'bluestone' is a type of stone that is blue in color.