Inwrought is an archaic and literary adjective that describes decoration woven or worked into fabric, stonework, metalwork or other material. To understand inwrought, imagine goblets encrusted or inwrought with jewels, and garments inwrought with silver and gold.
If inwrought makes you think of a Tolkein-esque fantasy world where magically empowered swords are wrought on Elven fires, good. Inwrought comes from the Middle English word for "work or make," and should conjure the early English history Tolkein drew on for inspiration. If the Middle English associations are leaving you cold, just remember inwrought by remembering the relationship between wrought, meaning "worked or made," and wright, which means "maker," as in a playwright, or "a maker of plays." Pretty soon inwrought's meaning will be inwrought into the fabric of your brain.