battalion
/bəˈtæljən/noun
1- a large body of troops ready for battle, especially an infantry unit forming part of a brigade（尤指构成一个旅的步兵单位）营。
1.1
- a large organized group of people pursuing a common aim or sharing a major undertaking（有共同目标或共同任务的）队伍。
词源
late 16th cent.: from French bataillon, from Italian battaglione, from battaglia 'battle'， from Latin （see BATTLE）.