The Collaborative International Dictionary
Louver \Lou"ver\, Louvre \Lou"vre\, n. [OE. lover, OF. lover, lovier; or l'ouvert the opening, fr. overt, ouvert, p. p. of ovrir, ouvrir, to open, F. ouvrir. Cf. Overt.] (Arch.) A small lantern. See Lantern, 2 (a) . [Written also lover, loover, lovery, and luffer.]
2. Same as louver boards, below
3. A set of slats resembling louver boards, arranged in a vertical row and attached at each slat end to a frame inserted in or part of a door or window; the slats may be made of wood, plastic, or metal, and the angle of inclination of the slats may be adjustable simultaneously, to allow more or less light or air into the enclosure.
Louver boards or Louver boarding, the sloping boards set to shed rainwater outward in openings which are to be left otherwise unfilled; as belfry windows, the openings of a louver, etc.
Louver work, slatted work.
Wiktionary
n. (context architecture English) A louver.
Usage examples of "luffer".
The treacherous driving conditions did not slow Monty Luffer down, as he had a Ford Explorer.
In the aisles were the sleeping-places of the Folk, and down the nave under the crown of the roof were three hearths for the fires, and above each hearth a luffer or smoke-bearer to draw the smoke up when the fires were lighted.