A warm dry wind blowing down the north sides of the Alps, especially in Switzerland. / (meteorology) A similar katabatic wind developing on the lee side of a mountain.

An adjusted value of the equivalent focal length, so computed as to equalize the positive and negative values of distortion over the entire field used in a camera.

Nonsense word traditional to English ballads and madrigals.

Alternative form of folderol / A gaudy thing of little value; a trinket. / Nonsense. / Excessive efforts expended on a something trivial; much ado about nothing.

(military) Petroleum based oil specially blended to produce a dense, efficient, screening smoke when vaporized and recondensed at atmospheric temperatures. Officially, fog oil is standard grade fuel number 2 (SGF2).

Any dance traditionally performed by the common people of a specific region.

(newspapers) Situated in the upper half of the front page of a broadsheet newspaper, and thus more prominent, as the lower half is not usually visible when the folded newspaper is displayed for sale.

(chiefly Britain, alternative in Canada) Alternative spelling of fetal

A house of the style that is predominant in the particular time and place referred to; an average house, an ordinary house.

Alternative spelling of twofold