zith ‧ er /ˈzɪðə $ -ər/ BrE AmE noun [countable]
[ Date: 1800-1900 ; Language: German ; Origin: Greek kithara type of stringed instrument ]
a musical instrument from Eastern Europe that consists of a flat box with strings stretched across it. You play it by pulling the strings with your fingers or a ↑ plectrum (=small piece of plastic, metal etc) .