2. Noun. (martial arts) Hand-to-hand combat in which both fighters are on the ground, or skill in such combat ¹
3. Noun. (golf) Putting; hitting the ball along the ground ¹
4. Noun. (American football countable) Running with the ball, rather than passing ¹
5. Noun. (US politics countable) Local political organization ¹
¹ Source: wiktionary.com