(noun)
a wild animal of the swine family;
e.g. He shot a wild hog in the forest.
(noun)
in informal usage, a person who is greedy, selfish, and/or filthy, or a thing that uses an excessive amount of something;
e.g. She was behaving like a hog and eating more than her fair share of the food.
(noun)
in informal British usage, a large and/or powerful motorcycle, such as a Harley Davidson (trademarked);
e.g. He took his hog out for a ride.
(verb)
in informal usage, to act in a selfish way and use or take most/all of something, to unfairly use something to excess;
e.g. They were trying to hog the room so that no-one else would use it.
(verb)
to cause something to curve or arch, especially to cause the bottom or keel of a ship to curve upwards in the middle (and sag at the ends) due to strain;
e.g. The bottom of the old ship has begun to hog, so it is no longer used at sea.
(verb)
to shred or tear up some material to bits using a machine;
e.g. This machine will hog the waste wood into wood chips.
(verb)
to cut something short so that the remaining portion stands up straight, especially to cut a horse's mane in this manner;
e.g. He plans to hog the horse's mane before it runs in the race.