mudsill

[ muhd-sil ]
/ ˈmʌdˌsɪl /

noun

the lowest sill of a structure, usually placed in or on the ground.

Origin of mudsill

First recorded in 1675–85; mud + sill
Also called footplate.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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