Constrain

• (v. t.) To bring into a narrow compass; to compress. • (v. t.) To violate; to ravish. • (v. t.) To hold back by force; to restrain; to repress. • (v. t.) To produce in such a manner as to give an unnatural effect; as, a constrained voice. • (v. t.) To compel; to force; to necessitate; to oblige. • (v. t.) To secure b...
Found on http://thinkexist.com/dictionary/meaning/constrain/

Constrain

Con·strain' transitive verb [ imperfect & past participle Constrained ; present participle & verbal noun Constraining .] [ Old French constraindre , French contrainde , Latin constringere ; con- + string...
Found on http://www.encyclo.co.uk/webster/C/144

constrain

compel 
Found on http://www.graduateshotline.com/list.html

constrain

constrain 1. To compel by physical, moral, or circumstantial force; oblige: 'We felt constrained to object to the way he was treating the dog.' 2. To keep within close bounds; to confine: 'He had a life that had been constrained by habit to the same few activities and friends.' 3. To inhibit or restrain; to hold back. 4. To produce in a forced o...
Found on http://www.wordinfo.info/words/index/info/view_unit/2051/

constrain

hold back
Found on https://www.vocabulary.com/lists/1162486

Constrain

To restrict the motion of an object to one or two planes, or to a certain range of values within a plane, in order to simplify the process of animation. Constraints are commonly imposed on joints within a skeleton during the process of rigging a character for animation, in order to prevent that character from performing actions that would be physic...
Found on http://www.computerarts.co.uk/downloads/3d__and__animation/the_3d_world_glo
No exact match found