graftyoudaoicibaDictYouDict[graft 词源字典]
graft: [15] Graft, in its original sense ‘plant part inserted into a living plant’ (the application to skin and other animal tissue is a late 19thcentury development), came from its resemblance in shape to a pencil. Greek graphíon meant ‘writing implement, stylus’ (it was a derivative of the verb gráphein ‘write’, source of English graphic). It passed via Latin graphium into Old French as grafe, gradually changing in its precise application with the advance of writing technology.

By the time it reached Old French it denoted a ‘pencil’, and it was then that the resemblance to two artificially united plant stems was noted and the metaphor born. English took the word over as graff in the late 14th century (it actually survived in that form into the 19th century), and within a hundred years had added a -t to the end to give modern English graft. Graft ‘corruption’, first recorded in mid 19th-century America, may be the same word, perhaps derived from the notion of a graft as an ‘insertion’, hence ‘something extra, on the side’. Graft ‘hard work’ [19], on the other hand, is probably a different word, perhaps based on the English dialect verb graft ‘dig’, an alteration of grave ‘dig’.
=> graphic[graft etymology, graft origin, 英语词源]
graft (n.1)youdaoicibaDictYouDict
"shoot inserted into another plant," late 15c. alteration of Middle English graff (late 14c.), from Old French graife "grafting knife, carving tool; stylus, pen," from Latin graphium "stylus," from Greek grapheion "stylus," from graphein "to write" (see -graphy). So called probably on resemblance of a stylus to the pencil-shaped shoots used in grafting. The terminal -t- in the English word is not explained. Surgical sense is from 1871.
graft (n.2)youdaoicibaDictYouDict
"corruption," 1865, perhaps 1859, American English, perhaps from British slang graft "one's occupation" (1853), which is perhaps from the identical word meaning "a ditch, moat," literally "a digging" (1640s), from Middle Dutch graft, from graven "to dig" (see grave (v.)).
graft (v.)youdaoicibaDictYouDict
late 15c., "insert a shoot from one tree into another," from graft (n.1). Figurative use by 1530s. Surgical sense by 1868. Related: Grafted; grafting.