Answer:

acoustic

Answer	Crossword Clue
ACOUSTIC	Kind of guitar
ACOUSTIC	Not electric, as a guitar
ACOUSTIC	Type of guitar

ACOUSTIC	Auditory.
ACOUSTIC	Of the science of sound.
ACOUSTIC	Of hearing.
ACOUSTIC	Of sound
ACOUSTIC	What one plays pool with?
ACOUSTIC	Unplugged?
ACOUSTIC	Folkie's choice of guitar
ACOUSTIC	Wireless?

ACOUSTIC	"Unplugged" guitar
ACOUSTIC	Guitar with no plug
ACOUSTIC	Like some guitars
ACOUSTIC	Type of bass

Crossword

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