mudsill

noun

mud·​sill ˈməd-ˌsil How to pronounce mudsill (audio)
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

Example Sentences

Recent Examples on the Web To stop cold air from blowing into the basement or crawlspace, fill any gaps under the mudsill with expanding foam sealant. Joseph Truini, Popular Mechanics, 17 Feb. 2021 The floor frame of a shed includes the mudsill, floor joists and perimeter band joists. Joseph Truini, Popular Mechanics, 18 Mar. 2021 To stop cold air from blowing into the basement or crawlspace, fill any gaps under the mudsill with expanding foam sealant. Joseph Truini, Popular Mechanics, 17 Feb. 2021 The floor frame of a shed includes the mudsill, floor joists and perimeter band joists. Joseph Truini, Popular Mechanics, 18 Mar. 2021 To stop cold air from blowing into the basement or crawlspace, fill any gaps under the mudsill with expanding foam sealant. Joseph Truini, Popular Mechanics, 17 Feb. 2021 To stop cold air from blowing into the basement or crawlspace, fill any gaps under the mudsill with expanding foam sealant. Joseph Truini, Popular Mechanics, 17 Feb. 2021 The floor frame of a shed includes the mudsill, floor joists and perimeter band joists. Joseph Truini, Popular Mechanics, 18 Mar. 2021 Then, cut pieces of fiberglass insulation or rigid polystryrene foam to fit tightly between the floor joists and up against the rim joist, which is the wide board that sits on-edge on top of the mudsill. Joseph Truini, Popular Mechanics, 17 Feb. 2021 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'mudsill.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Word History

First Known Use

1685, in the meaning defined at sense 1

Time Traveler
The first known use of mudsill was in 1685

Dictionary Entries Near mudsill

Cite this Entry

“Mudsill.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/mudsill. Accessed 4 Dec. 2022.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!


The Great British Vocabulary Quiz

  • union jack speech bubble
  • Named after Sir Robert Peel, what are British police called?
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

TAKE THE QUIZ
Universal Daily Crossword

A daily challenge for crossword fanatics.

TAKE THE QUIZ