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ach

[ahkh]
interjection German.
  1. alas; oh.
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ACH

  1. automated clearinghouse.
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ACh

Biochemistry.
  1. acetylcholine.
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Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for ach

Historical Examples

  • "Ach, no," said he humbly; for he could not look upon my face and hold his anger.

    The Bacillus of Beauty

    Harriet Stark

  • "Ach, Frulein, please do not leave us—and the fire," he added; for Dorothy had risen.

    Roden's Corner

    Henry Seton Merriman

  • Mrs. Hermann would glance at me quickly, emit slight "Ach's!"

    Falk

    Joseph Conrad

  • "Ach, no," chimed in husband and wife together as soon as they understood.

    Brother Copas

    Sir Arthur Thomas Quiller-Couch

  • Now, if you will follow me a few paces to ze right, here… Ach!

    Brother Copas

    Sir Arthur Thomas Quiller-Couch

British Dictionary definitions for ach

ach

interjection
  1. Scot an expression of surprise, impatience, disgust, etcAlso: och
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for ach

interj.

aspirated form of ah; in English often used to represent German or Celtic speech.

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Online Etymology Dictionary, © 2010 Douglas Harper
ach in Medicine

Ach

abbr.
  1. acetylcholine
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.