guitar
Pronunciation: /gɪˈtɑː/
noun
- a stringed musical instrument, with a fretted fingerboard, typically incurved sides, and six or twelve strings, played by plucking or strumming with the fingers or a plectrum. See also electric guitar

Origin:
early 17th century: from Spanish guitarra (partly via French), from Greek kithara, denoting an instrument similar to the lyre