Dragon's skin

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fossil stems whose leaf scars somewhat resemble the scales of reptiles; - a name used by miners and quarrymen.

See also: dragon

Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in periodicals archive ?
The shiny red, green, and blue tiles on the roof represent the scaly dragon's skin, and the rounded tiles running atop the edge form its backbone.
But the dragon's skin proved to be too strong for the weapons used by the town people.
4) adopts a more subtle and delicately applied blue for the figure of the saint and variegated colours to represent the various hues of the dragon's skin, adapting a composition by Raphael.
On the contrary, as ten Brink notes, Skeat seems to forget that Beowulf himself provides a quite vivid description of the glofs appearance in lines 2085b-88, where he reveals that the glove was bound with clasps and made of dragon's skin. Likewise, if the glof is turned into Grendel's hand or paw, ten Brink points out, lines 2089-90, where Beowulf explains that Grendel intended to put him inside his "glove," begin to lose their meaning.
Grendel's glove is actually more remarkable, both for its devil's craft and its dragon's skin texture as well as for its disgusting function as a sort of cannibal's game-bag.
The fact that the byrnie is made from "dracan fellum" (dragon's skin) and imbued with dark magical properties from "deofles craeftum" (devil's craft) make this detail all the more fantastic.
The additional detail of the dragon's skin does, however, introduce an interesting possibility for the second explanation of the description offered above.