Examples from the Web for doorsill
The preacher must hold their hands until they cross the doorsill of the Audience Chamber.A Circuit Rider's Wife|Corra Harris
And as I looked on, through the crevice under the doorsill, he put out his free hand and with his finger touched the woman gently.The Sleuth of St. James's Square|Melville Davisson Post
Its doorsill lay even with the pavement, inviting custom by an easy access, while repelling it by its squalor.
Then and then only, during all that time of watching, did Lad leave the doorsill of his own accord.Lad: A Dog|Albert Payson Terhune
The captain did not take the trouble to follow them beyond the doorsill of the room.Captain Ravenshaw|Robert Neilson Stephens