(p. 568) nikaṣa a streakplate or touchstone; whetstone; whetting; a testing streak of gold. নিকষণ n. act of rubbing or testing (gold) on a touchstone. নিকষিত a. rubbed or tested on a touchstone; polished; found to be genuine by testing on a touchstone, pure, sterling ('নিকষিত হেম'). 23)

(p. 942) śāṇa a whetstone; a grindstone; (also শাণ-পাথর); whetting; edge, sharpness; শাণ দেওয়া v. to whet, to sharpen; (fig.) to stimulate; (fig.) to make poignant. ̃ওয়ালা n. a whetter, a sharpener. ̃পাথর n. a whetstone. শাণিত a. whetted, sharpened (শাণিত তরবারি); sharp; (fig.) stimulated (শাণিত ক্ষুদা); (fig.) poignant, cutting to the quick (শাণিত তিরস্কার). 3)