L sill
noun Carpentry.
a sill for a building frame composed of a plate resting on the basement wall and a header or joist at the outer edge of the plate.
RELATED CONTENT
Are There Any Words That Use “W” As A Vowel?“Cwm” (a steep-walled semicircular basin in a mountain, sometimes containing a lake; a cirque) and “crwth” (an ancient Celtic musical instrument), both from the Welsh, use w as a vowel – standing for the same sound that oo stands for in boom and booth. “Crwth” is also spelled “crowd.” However, in words like “low” and “bow,” one can make a good case that the letter w represents a vowel. Both of these words end …
Compare box sill.
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019