Meaning of “tuneup” in the English Dictionary

american-english dictionary

"tuneup" in American English

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tuneupnoun [ C ]

us /ˈtunˌʌp/

a set of small improvements to an engine or other device:

It'll actually go up to 100,000 miles before its first scheduled tuneup.

(Definition of “tuneup” from the Cambridge Academic Content Dictionary © Cambridge University Press)