To punish by fine.

And the elders of that city shall take that man and chastise him; and they shall AMERCE him in an hundred shekels of silver, and give them unto the father of the damsel, because he hath brought up an evil name upon a virgin of Israel: and she shall be his wife; he may not put her away all his days. ( Deuteronomy 22:18-19 )

AMERCE

a-murs':

Found in the King James Version only in Deuteronomy 22:19, "And they shall amerce him in an hundred shekels of silver." Amerce is a legal term derived from the French (a = "at"; merci = "mercy," i.e. literally, "at the mercy" (of the court)). Here it is used of the imposing of a fine, according to the Law of Moses, upon the man who has been proven by the Elders to have brought a false charge against the virginity of the maid he has married by saying to the father, "I found not thy daughter a maid."