The abandonment of an elderly person in a public place such as a hospital or nursing home, especially by a relative who is unable or unwilling to provide or pay for his or her care.
Origin
1980s; earliest use found in The Times.
Definition of granny dumping in US English:
granny dumping
noun
informal
The abandonment of an elderly person in a public place such as a hospital or nursing home, especially by a relative who is unable or unwilling to provide or pay for his or her care.