law: Fatal Accidents Act, 1855 
  4. Interpretation clause 
  The following words and expressions are intended to have the
  
  meanings hereby assigned to them respectively, so far as such meanings are not
  
  excluded by the context or by the nature of the subject-matter; that is to say,
  
  the word "person" shall apply to bodies politic and corporate; and
  
  the word "parent" shall include father and mother, grand-father and
  
  grand-mother; and the word "child" shall include son and daughter,
  
  and grand-son and grand-daughter, and step-son and step-daughter.