Tripoli

n.

1.

(Min.) An earthy substance originally brought from Tripoli, used in polishing stones and metals. It consists almost wholly of the siliceous shells of diatoms.

Noun	1.	tripoli - a weathered and decomposed siliceous limestone; in powdered form it is used in polishing Synonyms: rottenstone
	2.	Tripoli - the capital and chief port and largest city of Libya; in northwestern Libya on the Mediterranean Sea; founded by the Phoenicians in the 7th century BC Synonyms: capital of Libya, Tarabulus Al-Gharb
	3.	Tripoli - a port city and commerical center in northwestern Lebanon on the Mediterranean Sea Synonyms: Tarabulus Ash-Sham, Trablous

limestone, rottenstone