flaser
noun
fla·ser
ˈfläzə(r)
plural -s
: an irregular usually streaked lens of granular texture found in a micaceous interstitial mass of rock and produced by shearing and pressure during metamorphism
Word History
Etymology
German, vein in wood or rock, probably dialect modification of flader vein in wood, veined wood, maple tree, from Middle High German vlader vein in wood, veined wood; perhaps akin to Greek platys flat, broad