1 Outlet for smoke in a roof.
2 Lantern or femerell over such an outlet with openings at its sides.
3 Structure on a roof for ventilation fitted with horizontal fixed lever-, louvre-, or luffer-boards sloping downwards and outwards, each board lapping over the one below, with a space between to exclude rain but allow the passage of air.
4 Any opening fitted with sloping boards or louvres, especially the belfry-stage of a church-tower.
Users without a subscription are not able to see the full content. Please,
or login to access all content.