A small lantern. See Lantern, 2
- A framed opening, as in a wall, door, or window, fitted with fixed or movable horizontal slats for admitting air and light and shedding rain.
- One of the slats used in such an opening.
- One of the narrow openings formed by such slats.
- A slatted, ventilating opening, as on the hood of a motor vehicle.
- A lantern-shaped cupola on the roof of a medieval building for admitting air and providing for the escape of smoke.