plectro
plectro is a Latin form of plectrum, meaning “quill/ plectrum/pick; keyboard key”. It is the ablative singular neuter noun or dative singular neuter noun.
Found 26 times in the Latin texts on Socratos.
Where it is used
Ovid, Metamorphoses 10.150: dicta prius: cecini plectro graviore Gigantas
All forms of plectrum (declension table)
Source: Socratos (socratos.org), a free reader for Ancient Greek and Latin. Grammar from the Perseus Treebank and Morpheus; dictionary entries from Lewis & Short, A Latin Dictionary (Perseus Digital Library, CC BY-SA). Counts are from the texts on Socratos.