(uncountable) A thick cloud that forms near the ground; the obscurity of such a cloud.

(uncountable) A mist or film clouding a surface.

(figurative) A state of mind characterized by lethargy and confusion.

(photography) A silver deposit or other blur on a negative or developed photographic image.

(computer graphics) Distance fog.

A new growth of grass appearing on a field that has been mowed or grazed.

(UK, dialect) Tall and decaying grass left standing after the cutting or grazing season.

(Scotland) Moss.

(intransitive) To become covered with or as if with fog.

(intransitive) To become obscured in condensation or water.

(intransitive, photography) To become dim or obscure.

(transitive, photography) To make dim or obscure.

(transitive, photography) To spoil (film) via exposure to light other than in the normal process of taking a photograph.

(transitive) To cover with or as if with fog.

(transitive) To disperse insecticide into (a forest canopy) so as to collect organisms.

(transitive) To obscure in condensation or water.

(transitive) To make confusing or obscure.

(transitive) To pasture cattle on the fog (of), or aftergrass, of; to eat off the fog from (a field).

(intransitive) To become covered with the kind of grass called fog.

(intransitive, obsolete) To practice in a small or mean way; to pettifog.