| battalion | |
| 1. n. (military) An army unit having two or more companies, etc. and a headquarters. Traditionally forming part of a regiment. | |
| 2. n. (US, military) an army unit having two or more companies, etc. and a headquarters; forming part of a brigade. | |
| 3. n. Any large body of troops. | |
| 4. n. (by extension) A great number of things. | |
| 5. v. To form into battalions. | |
