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trench silo

noun
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Definition of trench silo

: a trench often dug into a bank or slope, sometimes lined with concrete, and used mostly in regions of low rainfall for making and storing silage

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“Trench silo.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/trench%20silo. Accessed 21 Sep. 2020.

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