chekker
noun
chek·ker
ˈchekə(r)
plural -s
: a stringed keyboard instrument of the 14th and 15th centuries
Word History
Etymology
borrowed from Anglo-French, corresponding to Continental Middle French eschequier, eschaquier, probably the same word as Anglo-French cheker, escheker, Continental Middle French eschequier "chessboard, counting board, table with a checkered top"; presumably so called from the resemblance of the instrument to such a board