fog

noun

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

   “a bank of fog”

   “Thus the red damask curtains which now shut out the fog-laden, drizzling atmosphere of the Marylebone Road, had cost a mere song, and yet they might have been warranted to last another thirty years. A great bargain also had been the excellent Axminster carpet which covered the floor;[…].”

   “Wallis and Curtiz eventually agreed to shoot Howard Koch’s preferred ending, with distraught Ilse^([sic]), still in love with Rick, going off with Laszlo to America, and Rick and Louis going off together into the fog. (In Morocco? Fog? Never mind.)”

2. (uncountable)A mist or film clouding a surface.
3. (countable, figuratively, uncountable)A state of mind characterized by lethargy and confusion.

   “He did so many drugs, he was still in a fog three months after going through detox.”

   “I was on my way to the door, but all at once, through the fog in my head, I began to sight one reef that I hadn't paid any attention to afore.”

4. (countable, uncountable)A silver deposit or other blur on a negative or developed photographic image.
5. (countable, uncountable)Distance fog.
6. (uncountable)A new growth of grass appearing on a field that has been mowed or grazed.

   “The inclosures of fog, or aftergrass, reserved for spring-feed, are now supposed to be shut up, also the burnet, which is never to be fed in autumn ...”

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

   “[…] and they generally leave a great deal of Fog to rot on the Ground, which, with the Help of his well turned Dung-hill, dress his Ground […]”

8. (Scotland, uncountable)Moss.
9. (abbreviation, alt-of, initialism, uncountable)Initialism of fat, oil, and grease.
10. (abbreviation, alt-of, initialism, uncountable)Initialism of frequency of gobbledygook: the commonness of long and complicated words in a text, as measured by systems like the Gunning fog index.

verb

1. (intransitive)To become covered with or as if with fog.
2. (intransitive)To become obscured in condensation or water.

   “The mirror fogged every time he showered.”

3. (intransitive)To become dim or obscure.
4. (transitive)To make dim or obscure.
5. (transitive)To spoil (film) via exposure to light other than in the normal process of taking a photograph.
6. (transitive)To cover with or as if with fog.

   “Fogging for adult mosquito control began on June 4th in residential areas. Until September 25th, the Metro area was fogged eleven times, using nine truck-mounted foggers, eight hand swing foggers, and two boats.”

7. (transitive)To disperse insecticide into (a forest canopy) so as to collect organisms.
8. (transitive)To obscure in condensation or water.

   “Unfortunately, the pendulum has swung way too far to the other end where the saying in the industry is is^([sic]) that if you could fog a mirror, you could get a loan.”

9. (transitive)To make confusing or obscure.
10. (transitive)To pasture cattle on the fog (of), or aftergrass, of; to eat off the fog from (a field).
11. (intransitive)To become covered with the kind of grass called fog.
12. (intransitive, obsolete)To practice in a small or mean way; to pettifog.

    “Where wouldst thou fog to get a fee?”

adj

1. (abbreviation, alt-of, initialism, not-comparable)Initialism of fraudulently-obtained genuine, a type of illicit passport.