Constraint
WordNet
noun
(1) The act of constraining; the threat or use of force to control the thoughts or behavior of others
(2) A device that retards something's motion
"The car did not have proper restraints fitted"
(3) The state of being physically constrained
"Dogs should be kept under restraint"
WiktionaryText
Etymology
From , from , from verb (French: ).
Noun
- Something that constrains.
- A condition that a solution to an optimization problem must satisfy.