freestone
/ˈfriːstəʊn/noun
1
- mass noun a fine-grained stone which can be cut easily in any direction, in particular a type of sandstone or limestone乱石, 毛石, 易切石（尤指一种砂岩或石灰石）。
2
- a stone fruit in which the stone is easily separated from the flesh when the fruit is ripe离核果实：
as modifier freestone peaches.离核桃。与CLINGSTONE相对。