'Curse' in the Bible

"Curse Meroz, says the angel of the LORD, curse bitterly its inhabitants, because they came not to the help of the LORD, to the help of the LORD against the mighty.

and God also made all the wickedness of the men of Shechem fall back upon their heads, and upon them came the curse of Jotham the son of Jerubba'al.

And he said to his mother, "The eleven hundred pieces of silver which were taken from you, about which you uttered a curse, and also spoke it in my ears, behold, the silver is with me; I took it." And his mother said, "Blessed be my son by the LORD."