mass noun
1
- small loose particles of stone or sand砂; 砂砾; 砂粒：
she had a bit of grit in her eye.
她眼中进了一粒砂子。
1.1
- as modifier(with numeral) indicating the grade of fineness of an abrasive与数字连用（金刚砂、砂纸等磨料的）细度：
400 grit paper.
细度为400的砂纸。
1.2
- （亦作gritstone）a coarse sandstone粗砂岩：
count noun layers of impervious shales and grits.层层交叠、密不透风的页岩和粗砂岩。
2
- courage and resolve; strength of character勇气, 决心; 坚毅, 坚定：
he displayed the true grit of the navy pilot he used to be.
曾经当过海军领航员的他表现出了这一职业所特有的勇气和坚毅。
(gritted, gritting)with obj.
1
- clench (the teeth), especially in order to keep one's resolve when faced with an unpleasant or painful duty（尤指下决心时）咬紧（牙齿）：
figurative 〈喻〉Parliament must grit its teeth and take action
议会必须痛下决心, 采取行动
as adj. gritted 'Not here, ' he said through gritted teeth.“不在这儿,"他咬紧牙关说。
2
- spread grit and often salt on (an icy road)在（结冰的路面）上撒砂子和盐。
3
- no obj. move with or make a grating sound吱吱嘎嘎地移动; 发出摩擦声：
fine red dust that gritted between the teeth.
细细的红色砂子硌得人牙碜。
词源
Old English grēot 'sand， gravel'， of Germanic origin; related to German Griess, also to GROATS.