The state of being enslaved or the practice of slavery.
The practice of physically restraining people for sexual pleasure, such as by tying up or shackling.
Applied to clothing with many buckles, zips, etc., associated with punk and goth subcultures.
The state of lacking freedom; constraint.
The state of being a peon; the system of paying back debt through servitude and labour; loosely, any system of involuntary servitude.