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fish day

noun
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Definition of fish day

: a day on which fish is eaten in place of flesh in accordance with custom or religious practice : fast day

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History and Etymology for fish day

Middle English

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“Fish day.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/fish%20day. Accessed 29 Oct. 2020.

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