n.

1. 紀律，風紀；教養[U]
   They have good discipline.

   他們紀律嚴明。

2. 訓練，修養[U]
   It takes years of discipline to become a pianist.

   要成為鋼琴家需經多年訓練。

3. 懲戒，懲罰[U]
   A little discipline would do them a lot of good.

   略加懲處對他們將大有好處。

4. 【宗】教規，戒律[U]
5. 學科[C]

vt.

1. 訓練，訓導
   He disciplined the new soldiers.

   他訓練新兵。

2. 使有紀律；使有條不紊
3. 懲戒
   The boss is not going to discipline anybody.

   老板不會懲罰任何人。

n.

1. the practice of training people to obey rules or a code of behaviour.
   ▸controlled behaviour resulting from such training.
   ▸an activity providing mental or physical training:

   kung fu is a discipline open to old and young.
2. a branch of knowledge, especially one studied in higher education.

v.

1. train (someone) to obey rules or a code of behaviour by punishment or rebuke.
   ▸punish or rebuke formally for an offence.
2. [as adj. disciplined] showing a controlled form of behaviour.