acoustic

US /əˈkuː.stɪk/
UK /əˈkuː.stɪk/
"acoustic" picture
1.

relating to sound or the sense of hearing

:
•
The concert hall has excellent acoustic properties.
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We need to improve the acoustic insulation in this room.
:
auditorysonicaural
2.

of a musical instrument, not having electrical amplification

:
•
He prefers playing an acoustic guitar.
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The band performed an acoustic set at the cafe.
:
electricamplified
1.

an acoustic musical instrument

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He brought his acoustic to the jam session.
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The band decided to play a few acoustics for the intimate crowd.
:
acoustic guitar