1
: a supporting sill (as of a building or bridge) resting directly on a base and especially the earth
2
: a person of the lowest social level
Examples of mudsill in a Sentence
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The floor frame of a shed includes the mudsill, floor joists and perimeter band joists.
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Joseph Truini, Popular Mechanics, 18 Mar. 2021
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Joseph Truini, Popular Mechanics, 18 Mar. 2021
Cite this Entry
“Mudsill.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/mudsill. Accessed 3 Nov. 2025.
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