Adjective
Affected with a kind of chronic laminitis in which there is a growth of soft spongy horn between the coffin bone and the hoof wall. The disease is called pumiced foot, or pumice foot.
Source: Webster's dictionarythe old place of the Quoyles, half ruined, isolated, the walls and doors of it pumiced by stony lives of dead generations. The aunt felt a hot pang. Nothing would drive them out a second time. Annie Proulx