rottenstone, tripoli
(noun) a weathered and decomposed siliceous limestone; in powdered form it is used in polishing
Source: WordNet® 3.1
rottenstone (countable and uncountable, plural rottenstones)
(geology) A soft, friable limestone, used in polishes.
rottenstone (third-person singular simple present rottenstones, present participle rottenstoning, simple past and past participle rottenstoned)
(transitive) To polish with rottenstone.
Source: Wiktionary
10 June 2025
(noun) the discipline that studies the principles of transmiting information and the methods by which it is delivered (as print or radio or television etc.); “communications is his major field of study”
Decaffeinated coffee is not caffeine-free. Studies from the National Institute of Health (US) have shown that virtually all decaf coffee types contain caffeine. A 236-ml (8-oz) cup of decaf coffee contains up to 7 mg of caffeine, whereas a regular cup provided 70-140 mg.
