Meanings
adjectiveundersill (not comparable)
- not comparableBeneath a sill.
A vinyl undersill trim or finish trim should be used under windowsills to receive the cut edges of the siding.
1975, Robert Scharff, The complete book of home remodeling, page 292
Origin
Cite this entry
APA
undersill. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/undersill
MLA
“undersill.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/undersill. Accessed November 2, 2026.
Chicago
WatkinsX Dictionary, s.v. “undersill,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/undersill.
Source: undersill on Wiktionary, CC BY-SA 4.0.