Fixes the exact meaning of key words used throughout the document so every reference to them means the same thing.
This clause gives a precise meaning to important words (like *"the Property"*, *"Purchase Price"* or *"Business Day"*) so you don't have to spell them out every time. Whenever that word appears capitalised in the document, it carries exactly the meaning defined here. Get a definition wrong or leave a key term undefined and a whole clause can be read differently from what you intended, so it is worth checking each defined term is used consistently.