Definitions:

1. a territory that is controlled by a ruling state noun
   • Guam is a US Possession.
2. anything owned or possessed noun
   • They were very proud of their possessions.
3. in sports, the act of controlling the ball or puck noun
   • They took possession of the ball on their own goal line.
4. the act of having and controlling property noun
   • Possession is nine tenths of the law.

Synonyms:

• monomania
• ownership
• self-command
• self-control
• self-possession
• self-will
• will power
• willpower