Interdigital webbing

Membranes of skin between fingers and toes of animals

Interdigital webbing refers to the presence of skin membranes. Normally, in mammals, webbing is present but resorbed later in development, but in various mammal species, it occasionally persists in adulthood. In humans, it can be found in those suffering from LEOPARD syndrome and from Aarskog–Scott syndrome.

This keyword could refer to multiple things. Here are some suggestions: