1578 A. Parkhurst Let. to Hakluyt in (1935) I. 129 I have in sundry places sowen Wheate, Barlie, Rie, Oates, Beanes, Pease and seedes of herbes, Kernels, plumstones, nuts.
1826 16 Dec. 366/2 In these sacculi were entangled several cherry and plum stones; apple kernels; a friable body like a biliary calculus.
1987 R. Hall (1990) iii. iv. 314 Some..took plumstones gathered from rubbish bins and nursed them into trees.