freestones

Freestones are fruits whose flesh separates easily from the pit—peaches, plums, and certain other stone fruits.

The term distinguishes them from clingstone varieties, where the flesh adheres stubbornly to the seed.

I always buy freestone peaches for canning.

Freestone also refers to any fine-grained stone that can be cut freely in any direction without splitting along grain lines—sandstone and limestone used in masonry.