[医] 悬壅垂, 锤
, 颞
茎突

plectrum
plectra
[ noun ]
a small thin device (of metal or plastic or ivory) used to pluck a stringed instrument
<noun.artifact> 
Plectrum \Plec"trum\, n.; pl. L. {Plectra}, E. Plectrums . [L.,
fr. Gr. ? anything to strike with, fr.? to strike.]
A small instrument of ivory, wood, metal, or quill, used in
playing upon the lyre and other stringed instruments.