free·stone /ˈfriˌston/
砂石;核肉分離的果實
Free·stone n. A stone composed of sand or grit; -- so called because it is easily cut or wrought.
Free·stone, a. Having the flesh readily separating from the stone, as in certain kinds of peaches.
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freestone
n : fruit (especially peach) whose flesh does not adhere to the
pit