law: Hindu Adoptions and Maintenance Act, 1956 
  3. Definitions 
  In this Act, unless the context otherwise requires,- 
  (a) the expressions "custom" and "usage"
  
  signify any rule which, having been continuously and uniformly observed for a
  
  long time, has obtained the force of law among Hindus in any local area, tribe,
  
  community, group or family:
  PROVIDED  that the rule is certain and not unreasonable
  
  or opposed to public policy:
  PROVIDED FURTHER  that, in the case of a rule applicable only to
  
  a family, it has not been discontinued by the family;
  (b) "maintenance" includes- 
  (i) in all cases, provision for food,
  
  clothing, residence, education and medical attendance and treatment;
  (ii) in the case of an unmarried daughter,
  
  also the reasonable expenses of and incidents to her marriage;
  (c) "minor" means a person who has not completed his
  
  or her age of eighteen years.