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From Biology-Online Dictionary | Biology-Online Dictionary
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1. The act of binding; restriction; also, obligation.

2. (Science: medicine) a contraction of parts by applications; the action of an astringent substance on the animal economy. Constipation.

3. Astringency.

4. An obligation to have the grain growing on certain lands ground at a certain mill, the owner paying a toll.

The lands were said to be astricted to the mill.

Origin: L. Astrictio.