(geology, petrology) Certain dark igneous rocks having grain so fine that the individual crystals cannot be seen with the naked eye.

Alternative form of widthways

Third-person singular simple present indicative form of dewater

(obsolete, music) A kind of percussion idiophone, like the marimba, but with either wooden or steel keys designed to be bowed as well as played normally, developed by J.C. Deagan in early 20th cent...