ground
 I. ground1 (ground)n.
1.
a. The solid surface of the earth.
b. The floor of a body of water, especially the sea.
2. Soil; earth:
level the ground for a lawn.
3. An area of land designated for a particular purpose. Often used in the plural:
a burial ground; parade grounds.
4. The land surrounding or forming part of a house or another building. Often used in the plural:
a guesthouse on the grounds of the mansion.
5. An area or a position that is contested in or as if in battle:
The soldiers held their ground against the enemy. Character witnesses helped the defendant stand her ground in the trial.
6. Something that serves as a foundation or means of attachment for something else:
a ground of white paint under the mural.
7. A surrounding area; a background.
8. The foundation for an argument, a belief, or an action; a basis. Often used in the plural.
9. The underlying condition prompting an action; a cause. Often used in the plural:
grounds for suspicion; a ground for divorce.
See Synonyms at base1.
10. An area of reference or discussion; a subject:
The professor covered new ground in every lecture.
11. grounds The sediment at or from the bottom of a liquid:
coffee grounds.
12. Electricity.
a. A large conducting body, such as the earth or an electric circuit connected to the earth, used as an arbitrary zero of potential.
b. A conducting object, such as a wire, that is connected to such a position of zero potential.v. ground·ed, ground·ing, groundsv. tr.
1. To place on or cause to touch the ground.
2. To provide a basis for (a theory, for example); justify.
3. To supply with basic information; instruct in fundamentals.
4.
a. To prevent (an aircraft or a pilot) from flying.
b. Informal. To restrict (someone) especially to a certain place as a punishment.
5. Electricity. To connect (an electric circuit) to a ground.
6. Nautical. To run (a vessel) aground.
7.
a. Baseball. To hit (a ball) onto the ground.
b. Football. To throw (a ball) to the ground in order to stop play and avoid being tackled behind the line of scrimmage.v. intr.
1. To touch or reach the ground.
2. Baseball. To hit a ground ball:
grounded to the second baseman.
3. Nautical. To run aground.Phrasal Verb:ground out Baseball
To be put out by hitting a ground ball that is fielded and thrown to first base.Idioms:drive/run into the ground
To belabor (an issue or a subject).from the ground up
From the most basic level to the highest level; completely:
designed the house from the ground up; learned the family business from the ground up.off the ground
Under way, as if in flight:
Because of legal difficulties, the construction project never got off the ground.on (one's) own ground
In a situation where one has knowledge or competence:
a sculptor back on her own ground after experiments with painting.on the ground
At a place that is exciting, interesting, or important.to ground
1. Into a den or burrow:
a fox going to ground.
2. Into hiding. [Middle English, from Old English grund.] II. ground2 (ground)v.
Past tense and past participle of grind.
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