Chi (noun)

1. In Chinese philosophy and traditional Chinese medicine, the vital energy that animates the body and is held to be essential for good health.
2. A concept in Chinese martial arts and traditional Chinese medicine, often translated as "energy flow".

Origin:

From chinese qi or mandarin ch"i, from old chinese k"i, from proto-sino-tibetan *k(r)ag.

Examples:

1. He was taught to focus his chi to improve his martial arts skills.
2. The practice of tai chi is believed to improve the flow of chi throughout the body.
3. The chi energy is said to be concentrated in certain points of the body called acupoints.
4. The chi healing technique is used to balance the energy flow in the body.
5. The chi meditation is one of the practices to improve the energy flow in the body.