bluestone

blue·stone

B b

Definitions of bluestone word

noun bluestone a blue-grey sandstone containing much clay, used for building and paving 3
noun bluestone the blue crystalline form of copper sulphate 3
noun bluestone a blue variety of basalt found in Australia and used as a building stone 3
noun bluestone a blue-gray sandstone that is easily split into thin slabs, used as flagstone 3
noun bluestone copper sulfate 3
noun bluestone chalcanthite 3

before 1645

One of the 44% oldest English words

First recorded in 1645-55; blue + stone

noun

adjective

verb

adverb

pronoun

preposition

conjunction

determiner

exclamation

A common word. It’s meaning is known to most children of preschool age. About 70% of English native speakers know the meaning and use the word.

Most Europeans know this English word. The frequency of it’s usage is somewhere between "mom" and "screwdriver".

This diagram is provided by Google Ngram Viewer