Picker
来自Big Physics
wiktionary
From Middle English pikere, pykare, equivalent to pick + -er.
etymonline
picker (n.)
1520s, "one who steals;" the meaning in trades and occupations "one who picks" in any sense is from 1550s; agent noun from pick (v.). From 1923 as "one who plays a banjo, guitar, or similar stringed musical instrument." Picker-upper "something that revives" is attested from 1936.
