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These example sentences are selected automatically from various online news sources to reflect current usage of the word 'hash mark.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
1907, in the meaning defined at sense 1
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22 Nov 2018
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What made you want to look up hash mark? Please tell us where you read or heard it (including the quote, if possible).
to make faulty or ineffective
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