Giant's Causeway

noun

1. a large body of basalt, unusual in displaying perfect columnar jointing, exposed on a promontory on the northern coast of Northern Ireland.

Giant's Causeway

noun

1. a promontory of columnar basalt on the N coast of Northern Ireland, in Antrim: consists of several thousand pillars, mostly hexagonal, that were formed by the rapid cooling of lava and the inward contraction of the lava flow

Word History and Origins

Origin of Giant's Causeway¹

First recorded in 1770–80