astriction noun. 
[ǝ'strɪkʃ(ǝ)n] Also 
adstriction. 
M16.[Old & mod. French, or Latin astrictio(n-), formed as ASTRICT: see -ION.]1.  Moral or legal obligation. 
M16-M17.2.  Binding together; constriction; constipation. 
arch. M16.3.  Astringency. 
M16-M18.4.  Restriction; 
spec. in 
Scots Law, restriction in tenure by an obligation to have grain ground at a particular mill. 
obsolete exc. 
Hist. E17.  [TahlilGaran] English Dictionary ▲