Definition of "Boolean"

Boolean

/ˈbuːl.i.ən/

adjective
not comparable
1. Of or pertaining to the work of George Boole.
2. (logic, computing) Pertaining to data items that can have “true” and “false” (or, equivalently, 1 and 0 respectively) as their only possible values and to operations on such values.
  Quotations
  Oh, Boolean operators! "Blue and ones"! Good idea!
  2005 May 9, Michael Chapman; Matthew Chapman, “Bug In Mouth Disease”, in Homestar Runner‎, spoken by Strong Sad (Matthew Chapman)
noun
plural Booleans
1. (logic, computing) A variable that can hold a single true/false (1/0) value.