Forced or compelled against the will, resulting in undue sustained muscluar contraction E g , the horse may be constrained to bend, or flex, or to move forward at speed
If you feel constrained to do something, you feel that you must do it, even though you would prefer not to. For some reason he felt constrained to lower his voice
To constrain someone or something means to limit their development or force them to behave in a particular way. Women are too often constrained by family commitments and by low expectations