Answer:

clavichord

Answer	Crossword Clue
CLAVICHORD	Early keyboard
CLAVICHORD	Bach's instrument.
CLAVICHORD	Well-tempered item

CLAVICHORD	Piano's early cousin
CLAVICHORD	Early keyboard instrument

Crossword

a puzzle consisting of a grid of squares and blanks into which words crossing vertically and horizontally are written according to clues.