A Boolean operator is a type of logical operator used in programming and mathematics. The two most common Boolean operators are NOR and NOT. NOR stands for 'not or, ' meaning that the result of the operation is false if either of the operands is true. NOT stands for 'not, ' meaning that the result of the operation is the opposite of the operand. Both of these operators are used to create complex logic statements and can be combined with other operators to create more complex expressions.