A Training

1. Action of the verb to train. (Can we add an example for this sense?)
2. The activity of imparting and acquiring skills.
3. The result of good social upbringing.
4. (computing) The process by which two modems determine which protocol and speed to use; handshaking.
5. (voice recognition) The recording of multiple samples of a user's voice to aid pattern recognition.

Usage notes

• The plural trainings, for more than one training session, is not often used.