Etymology 1 
From Old English grund, from Proto-Germanic *grunduz, from Proto-Indo-European *gʰr̥mtu-. Cognate with West Frisian grûn, Dutch grond and German Grund. Non-Germanic cognates include Albanian grundë (“brittle earth”) and gryej (“to erode, crumble”).
- (uncountable) The surface of the Earth, as opposed to the sky or water or underground.
- (uncountable) Terrain.
- (uncountable) Soil, earth.
- The worm crawls through the ground.
- (countable) The bottom of a body of water.
- Basis, foundation, groundwork, legwork.
- Background, context, framework, surroundings.
- (countable) A soccer stadium.
- Manchester United's ground is known as Old Trafford.
- (electricity, Canada and US) An electrical conductor connected to the ground.
- (electricity, Canada and US) A level of electrical potential used as a zero reference.
- (countable, cricket) The area of grass on which a match is played (a cricket field); the entire arena in which it is played; that part of the field behind a batsman's popping crease where he can not be run out (hence to make one's ground)
- (electricity) earth (British)
Derived terms 
- The translations below need to be checked and inserted above into the appropriate translation tables, removing any numbers. Numbers do not necessarily match those in definitions. See instructions at Help:How to check translations.
See also 
- To connect (an electrical conductor or device) to a ground.
- (transitive) To punish a child or teenager by forcing him/her to stay at home and/or take away certain privileges.
- Carla, you are grounded until further notice for lying to us about your whereabouts yesterday.
- My kids are currently grounded from television.
- (transitive) To forbid (an aircraft or pilot) to fly.
- Because of the bad weather, all flights were grounded.
- To gain a basic education (of a particular subject).
- Jim was grounded in maths.
- (baseball) to hit a ground ball; to hit a ground ball which results in an out. Compare fly (verb(regular)) and line (verb).
- Jones grounded to second in his last at-bat.
- (cricket) (of a batsman) to place his bat, or part of his body, on the ground behind the popping crease so as not to be run out
- (intransitive) To run aground; to strike the bottom and remain fixed.
- The ship grounded on the bar.
Etymology 2 
- simple past tense and past participle of grind
- I ground the coffee up nicely.
ground (not comparable)
- Crushed, or reduced to small particles.
- ground mustard seed
- Processed by grinding.
- lenses of ground glass