grounding
🇺🇸
/ˈɡraʊndɪŋ/
🇬🇧
/ˈɡraʊndɪŋ/
learning the basic parts of a subject
His grounding in math helped him throughout his career.
not allowing a plane to fly or a ship to sail, especially because they are not safe
The old ship was grounding in the port due to safety issues.