pisolite
noun
pi·so·lite ˈpī-sə-ˌlīt 
: a limestone composed of pisiform concretions
pisolitic
ˌpī-sə-ˈli-tik
adjective 
Word History
Etymology
New Latin pisolithus, from Greek pisos pea + -lithos -lith
First Known Use
1708, in the meaning defined above