Wrought is an adjective that means "molded, shaped, or manufactured." A wrought-iron fence has been shaped to fit a particular ornamental style.
Wrought is most often used as an adjective to describe the shaping, altering, molding, and manufacturing of various metals. As a verb, wrought is the archaic past tense of the word work but is often confused as a past tense for the word wreak, which means "to cause damage." The confusion arises from the fact that the phrase "wrought havoc" is an acceptable variant of the phrase "wreaked havoc," but even here, wrought is etymologically rooted in the word work not wreak.