1) Medical sign 
A rhinolith is a calculus present in the nasal cavity. The word is derived from the roots rhino- and -lith, literally meaning `nose stone`. It is an uncommon medical phenomenon, not to be confused with dried nasal mucus. A rhinolith usually forms around the nucleus of a small exogenous foreign body, blood clot or secretion by slow deposition of .....
• (n.) A concretion formed within the cavities of the nose.
(ri´no-lith) a calculus formed in the nose from mucous and nasal debris. Called also nasal calculus.
Type: Term Pronunciation: rī′nō-lith Definitions: 1. A calcareous concretion in the nasal cavity often around a foreign body. Synonyms: nasal calculus, rhinolite
rhinolith, rhinolithic 1. A calcareous concretion in the nasal cavity often around an undetected foreign body. 2. A nasal stone or concretion.