From the second edition (1989):
‖finochio
(fɪˈnɒkɪəʊ) Also 8 fenochia, -io, -occhio, finocha, finochi, 8–9 fin(n)ochia. [It. finocchio:—popular L. fēnoclum: see fennel.]


The sweet fennel (Fæniculum dulce); also called the dwarf or French fennel.

1723 R. Digby Let. to Pope 14 Aug. How spring the Brocoli and the Fenochio. 1767 J. Abercrombie Ev. Man own Gardener (1803) 658/1 Finochio, or French fennel; for soups, sallads, etc. 1796 C. Marshall Garden. xvi. (1813) 267 Finochio is a sort of dwarf fennel. 1847 Craig, Finnochia, a variety of fennel.