Definition of 一軍 (いちぐん)
いちぐん
                        一軍
いちぐん
ichigun
Common word
noun
1.
one army, whole army
2.
3.
the cool kids, the popular kids(colloquialism)
Other readings:
                1軍【いちぐん】
                Related Kanji
| 一 | one, one radical (no.1) | 
| 軍 | army, force, troops, war, battle |