n.
1.the formation of stonelike objects within a body organ (e.g., the kidneys)
2.a hard lump produced by the concretion of mineral salts
3.an increase in the density of something
4.the union of diverse things into one body or form or group
Idiom of the Day
pay the piper
to face the results of one's actions
The city government was forced to pay the piper after many years of bad management.