2010年9月27日 · On a door frame, the sill is the portion of the door frame that runs along the bottom and sits directly on the foundation of your floor. It is the cross piece that actually completes the pre-installed door frame. The sill is actually underneath your threshold. The door seal needs to be sealed to prevent water damage.

door•sill (dôr′sil′, dōr′-), USA pronunciation n. Building the sill of a doorway.

door-sill is formed within English, by compounding. Etymons: door n., sill n.1.

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the sill of a doorway or entry; threshold. Having a problem? The meaning of doorsill. Definition of doorsill. English dictionary and integrated thesaurus for learners, writers, teachers, and students with advanced, intermediate, and beginner levels.

Installing a sloped sill pan will add vital protection against damaging leaks for your entryway while protecting your wallet from extensive, costl...more. Whether you’re installing an entirely new...

the sill of a doorway. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Here are the facts and trivia that people are buzzing about. …

[dôr′sil΄] n. a length of wood, masonry, etc. along the bottom of a doorway; threshold