|Noah Webster's Dictionary|
(p. pr. & vb. n.) of Curb.
Curbing (2 Occurrences)
John 11:33 Seeing her weeping aloud, and the Jews in like manner weeping who had come with her, Jesus, curbing the strong emotion of His spirit, (WEY)
James 1:26 If a man thinks that he is scrupulously religious, although he is not curbing his tongue but is deceiving himself, his religious service is worthless. (WEY)