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hayseed (n.)[hayseed 词源字典]: also hay-seed, 1570s, "grass seed shaken out of hay," from hay + seed (n.). In U.S. slang sense of "comical rustic" it dates from 1875. To have hayseed in (one's) hair was a common mid-19c. way in U.S. to indicate a country person.
The opinion of the court was delivered by Justice Hunt; the chief justice, in whose hair the Ohio hayseed still lingers, delivering a dissenting opinion (etc.) ["The Chronicle," New York, Nov. 12, 1874]
[hayseed etymology, hayseed origin, 英语词源]
haystack (n.): mid-15c., from hay + stack (n.).