Bedeutung von “ground” — Learner’s Dictionary

ground

verb us uk /ɡraʊnd/
be grounded

If a vehicle that travels on water or in the air is grounded, it cannot or may not leave the ground:

The aircraft was grounded by fog.
be grounded in sth formal

to be based firmly on something:

Fiction should be grounded in reality.

(Definition von “ground verb” aus dem Cambridge Learner's Dictionary © Cambridge University Press)