noun
plural grounds
the ground :the surface of the earth
[noncount] :the soil that is on or under the surface of the earth
[noncount] :an area of land
[count] :an area of land or sea that is used for a particular purpose
c grounds [plural] :the land around a building
[noncount] :the bottom of the ocean, a lake, etc.
[noncount] :an area of knowledge or interest
[singular] :a place or situation in which someone or something is developed or tested
a set of beliefs, opinions, or attitudes [noncount]
[count] :a reason for doing or thinking something - usually plural
grounds [plural] :very small pieces of crushed coffee beans
[count] US :a wire or metal object that makes an electrical connection with the earth - usually singular
[count] :the area behind or around a design
above ground
on top of the earth's surface
below ground
under the earth's surface
break ground
to dig into the ground at the start of building something
or break new ground :to make new discoveries
burn to the ground
down to the ground
Brit informal :completely or perfectly
from the ground up
completely or thoroughly
from a point at which nothing has been done :from the very beginning
gain ground
or make up ground
to move faster so that you come closer to someone or something that is in front of you
get off the ground
to begin to operate or proceed in a successful way
get (something) off the ground :to cause (something) to begin to operate or proceed in successful way
give ground
to move backward when you are being attacked :retreat
have/keep your feet on the ground
hit the ground running
hold/stand your ground
to not change your position when you are being attacked :to not retreat
into the ground
to the point of being very tired or exhausted
to the point of complete failure or ruin
lose ground
to move slower so that you are farther away from someone or something that is in front of you
verb
grounds; grounded; grounding
[+ obj] :to provide a basis or reason for (something) - usually used as (be) grounded
to cause a ship or boat to hit the ground below the water so that it cannot move [+ obj]
[+ obj] :to prevent (an aircraft or a pilot) from flying
[+ obj] :to stop (a child) from leaving the house to spend time with friends as a form of punishment
[+ obj] US :to connect (a wire, a device, etc.) electrically to the ground for safety
[no obj] baseball :to hit a ground ball
[+ obj] American football :to throw (a football) to the ground in order to avoid being tackled
ground in
[phrasal verb]
ground (someone) in (something) :to give (someone) basic knowledge about (something)
past tense and past participle of 1grind