The word "doorsill" is correct and usable in written English.
It is a noun that refers to the flat piece of material at the bottom of a door, usually made of wood or stone. You can use it in any sentence where the context of a doorsill is necessary. For example: "I scraped my knee on the hard doorsill after tripping on the welcome mat."
The group made notes: shallow burrows under the doorsill, some no larger than a half dollar, stuffed with shreds of paper and food scraps.
Junpei's mother often shows up to burn incense on their doorsill, wailing in the gathering dark.
A shadowy image of a girl scrubbing a doorsill variously brings to mind 19th-century photography, Chardin and Rembrandt.
Each arrival created its particular havoc, devouring native vegetation or gobbling the eggs of ground-nesting birds, bringing a unique ecosystem to the doorsill of extinction.
"Why do you think we elevate our doorways?" Ms. Benjawan asked, as we stepped over a foot-tall doorsill into a soaring Ayutthaya-style royal pavilion built entirely without nails.
A version of the impala is also stamped on the car's aluminum doorsill plates, and its form appears on owner's manuals, embroidered badges and floor mats.
There were many doorsills in the house, she said, and if the wheels caught on one of them he would tip forward onto his face and whatever intact nerve endings he had left would wind up paralyzed.
When entering the Vatadage, look down at the semicircular moonstones, carvings placed like welcome mats before stone doorsills.
Children's names and height marks were penciled on doorsills.
As they moved from room to room, Ms. Bakker pointed out a rug with a hazardous corner; a lamp without a shade; inadequate light in a hallway; doorsills that could be tripped over, mattresses that could be firmer and lower.
The safety engineers worry that tall sport utility vehicles are more likely to roll over, more likely to override the bumpers and doorsills of lower-riding cars and more likely to blind other drivers with high-mounted headlights.
