† jobnutn.Obsolete (the name of) a game in which hazelnuts are perforated and strung through, in order to be knocked against each other (cf. cob-nutn. 2 and conkern. a).
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society > leisure > entertainment > pastimes > game > children's game > other children's games > [noun] > conkers, etc.
cob-nutc1440
jobnut1659
conquering1821
conkers1877
1659 Lady Alimonyii. v. sig. D2v All his games..Are yert-point, nine pins, job-nut, or span counter.