piker (n.)youdaoicibaDictYouDict[piker 词源字典]
"miserly person," 1872, formerly "poor migrant to California" (1860), earlier pike (1854), perhaps originally "vagrant who wanders the pike (n.1)" (which is the notion in Sussex dialectal piker "vagrant, tramp, gypsy," 1838), but Barnhart, OED and others suggest the American English word ultimately is a reference to people from Pike County, Missouri.[piker etymology, piker origin, 英语词源]