The Barddas of Iolo Morganwg, Vol. I., ed. by J. Williams Ab Ithel, [1862], at sacred-texts.com
Manred, the original form of all the materials, or all the constituents, that is, the elements, of which the first four of the five were dead, namely, calas, 1 fluidity, breath, and fire, until God agitated them by uttering His Name, when instantly they became alive in one triumphant song, and manifested their condition.
371:1 p. 370 The root of this word is cal, the root-also of caled, hard; it is translated corporeity.