1. (n.) A strict system of order or government; as an exercise regimen\.
2. (n.) Any regulation or remedy which is intended to produce beneficial effects by gradual operation
3. (n.) a systematic course of diet, etc., pursed with a view to improving or preserving the health, or for the purpose of attaining some particular effect, as a reduction of flesh; -- sometimes used synonymously with hygiene.
4. (n.) A syntactical relation between words, as when one depends on another and is regulated by it in respect to case or mood; government.