Definition of headsill

1 : a horizontal member at the top of a doorframe or window frame
2 : either of the pieces supporting the log at its ends in a saw pit

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First Known Use of headsill

1679, in the meaning defined at sense 1

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The first known use of headsill was in 1679

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Cite this Entry

“Headsill.” The Merriam-Webster.com Dictionary, Merriam-Webster Inc., https://www.merriam-webster.com/dictionary/headsill. Accessed 9 December 2019.

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