英语词源字典 - 在线词源网站

shako (n.)[shako 词源字典]: cylindrical soldier's hat with plume, 1815, from Hungarian csákó, short for csákós süveg "peaked cap," from adjectival form of csáko "peak, projecting point of a cow's horn," which some European etymologists derive from German zacken "point, spike," but which Hungarian sources regard as of unknown origin.[shako etymology, shako origin, 英语词源]
tack (n.1): "clasp, hook, fastener," also "a nail" of some kind, c. 1400, from Old North French taque "nail, pin, peg" (Old French tache, 12c., "nail, spike, tack; pin brooch"), probably from a Germanic source (compare Middle Dutch tacke "twig, spike," Frisian tak "a tine, prong, twig, branch," Low German takk "tine, pointed thing," German Zacken "sharp point, tooth, prong"), from Proto-Germanic *tag-. Meaning "small, sharp nail with a flat head" is attested from mid-15c. The meaning "rope to hold the corner of a sail in place" is first recorded late 15c.
zig-zag (n.): also zigzag, 1712, from French zigzag (1670s), perhaps from German Zickzack (though this is attested only from 1703), possibly a reduplication of Zacke "tooth, prong." Earliest use in German is in reference to military siege approaches. Originally in English used to describe the layout of certain garden paths. As an adjective from 1750; the verb is recorded from 1774. The brand of cigarette paper is from 1909. Related: Zig-zagged; zig-zagging.
zigzag: "A line or course having abrupt alternate right and left turns", Early 18th century: from French, from German Zickzack, symbolic of alternation of direction, first applied to fortifications.