The brow is a term that refers to the arch of the forehead or the hairline above the eyes. There are several synonyms for this word, including forehead, cranium, temple, and crown. Forehead is the most commonly used synonym and refers specifically to the part of the face between the eyebrows and the hairline. Cranium is a more technical term that is used to describe the top portion of the skull, which includes the brow. Temple is a less common synonym that specifically refers to the area on the side of the head near the eyes. Crown is another synonym that can be used to describe the top of the head, including the brow.