The Collaborative International Dictionary
Pistillation
Pistillation \Pis`til*la"tion\, n. [L. pistillum a pestle.]
The act of pounding or breaking in a mortar; pestillation.
[Obs.]
--Sir T. Browne.
Wiktionary
pistillation
n. (context obsolete English) The action of pounding with a pestle.