名詞 granite:

1. plutonic igneous rock having visibly crystalline texture; generally composed of feldspar and mica and quartz
2. something having the quality of granite (unyielding firmness)

1. A coarse-grained granite, sometimes rich in rare elements such as uranium, tungsten, and tantalum.
   花崗偉晶巖一種有時富含鈾、鎢和鉭等稀有元素的粗紋理花崗巖
2. Iron utensils with a mottled enamel resembling granite.
   單涂搪瓷器皿表面涂以搪瓷使外觀象花崗巖的鐵制品
3. The valley ended in a perpendicular rim of granite.
   那山谷的盡頭是花崗石的斷崖。
4. He has a heart of granite.
   他有一副鐵石心腸。

gran.ite

n.（名詞）
A common, coarse-grained, light-colored, hard igneous rock consisting chiefly of quartz, orthoclase or microcline, and mica, used in monuments and for building.
花崗巖：一種常見的、晶粒粗糙的淺亮色堅硬的火成巖，主要由石英、正長石或微斜長石及云母組成，用于紀念碑和建筑物
Unyielding endurance; steadfastness:
堅固耐久；堅韌不拔：
例句：
a will of granite.
堅定的信念

來源：
Italian granito [from past participle of] granire [to make grainy]
意大利語 granito [] 源自granire的過去分詞 [使成顆粒狀]
from grano [grain]
源自 grano [顆粒]
from Latin gr3num * see g—…-no-
源自 拉丁語 gr3num *參見 g—…-no-

【引伸】
granit.ic