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walnut: walnut: [OE] A walnut is etymologically a ‘foreign nut’. Its name alludes to the fact that the nut was regarded by the Germanic peoples as an exotic import from southern Europe, land of Romans and Celts (their own native nut was the hazel). Prehistoric Germanic *walkhaz originally meant ‘Celtic’ (it was borrowed from Latin Volcae, the name of a Celtic people), but it soon broadened out to include anyone or anything foreign (including the Romans) within its scope.

Its original Celtic connotations survive, however, in Welsh and Walloon (the name of a people of Gaulish origin), both of which go back to *walkhaz. English shares the formation walnut with its Germanic neighbours – German walnuss, Dutch walnoot, Swedish valnöt, and Danish valnød.
=> walloon, welsh
balneal (adj.): "pertaining to baths," from Latin balneum "bath," from Greek balaneion, which is of unknown origin.
casualness (n.): 1730, from casual (adj.) + -ness.
malnourished (adj.): 1906, from mal- "bad, badly" + nourished (see nourish).
malnourishment (n.): 1899, see mal- + nourishment.
malnutrition (n.): 1843, from mal- + nutrition.
naturalness (n.): "normality," early 15c., from natural (adj.) + -ness.
partialness (n.): "incompleteness," 1701, from partial + -ness.
walnut (n.): Old English walhnutu "nut of the walnut tree," literally "foreign nut," from wealh "foreign" (see Welsh) + hnutu (see nut). Compare Old Norse valhnot, Middle Low German walnut, Middle Dutch walnote, Dutch walnoot, German Walnuss, So called because it was introduced from Gaul and Italy, distinguishing it from the native hazel nut. Compare the Late Latin name for it, nux Gallica, literally "Gaulish nut." Applied to the tree itself from 1600 (earlier walnut tree, c. 1400).
identicalness: "The quality of being identical; sameness; identity", Late 17th cent. From identical + -ness. Compare earlier identity.
satiricalness: "The quality or fact of being satirical; satirical tone or style", Mid 17th cent.; earliest use found in Thomas Fuller (1607/8–1661), Church of England clergyman. From satirical + -ness.
pragmaticalness: "The quality of being pragmatical; especially the officiousness, meddlesomeness; opinionatedness, dogmatism. Formerly also: †activity, assiduity ( obsolete )", Early 17th cent.; earliest use found in Robert Bolton (1572–1631), Church of England clergyman. From pragmatical + -ness.