/ ˈplektrəm; NAmE / noun
( pl. plec·trums or plec·tra / -trə; NAmE /) (also informal pick ) a small piece of metal, plastic, etc. used for plucking the strings of a guitar or similar instrument
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WORD ORIGIN
late Middle English : via Latin from Greek plēktron something with which to strike, from plēssein to strike.