Definify.com

Webster 1913 Edition

Groundsill

Ground′sel

,

Ground′sillˊ

,

Noun.

[

Ground

+

sill

.]

See

Ground plate

(a)

, under

Definition 2024

groundsill

groundsill

English

Alternative forms

grunsel (obsolete)
groundsel

Noun

groundsill ‎(plural groundsills)

(rare) A timber beam used as the foundation for a building.
The lowest beam of a door-frame; the threshold.