Oriel/ˈɔːriəl/ Definition 1 of 2Pro Tip 1/3Architecture Term An oriel is an architectural feature, not just any regular window. The Victorian house had a charming oriel overlooking the street. Pro Tip 2/3Protruding Window Remember 'oriel' refers to windows that project outward from a building's wall. The oriel is so prominent that it can be seen from the sidewalk. Pro Tip 3/3Visual Interest Oriels are often used to add visual interest and space to rooms, not just light. Their dining room feels larger thanks to the oriel.