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flat spot

(engineering) a region of poor acceleration over a narrow range of throttle openings, caused by a weak mixture in the carburettor
any narrow region of poor performance in a mechanical device
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Examples from the Web for flat spot
Historical Examples
  • The country has no flat spot in it; yet the hills are not high.

    Rural Rides William Cobbett
  • When the earth which covered this flat spot was cleared away, they met with another deposit containing bones.

    Primitive Man Louis Figuier
  • Under the trees on a flat spot by the river-bank were seated round a fire a man and a boy and a monkey.

    Blown to Bits R.M. Ballantyne

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