To Rap. v.n. [hræppan, Saxon.] To strike with a quick smart blow.
Knock me at this gate
And rap me well, or I'll knock your knave's pate. Shakesp.
With one great peal they rap the door,
Like footmen on a visiting day. Prior.
He was provoked in the spirit of magistracy, upon discovering a judge, who rapped out a great oath at his footman. Addison.