The term 'Singular or Plural Pronoun' refers to a type of pronoun that can be used in either singular or plural form. This type of pronoun is used to refer to a person, place, thing, or idea without specifying whether it is one or many. Examples of singular or plural pronouns include 'they, ' 'THEM, ' and 'their.' These pronouns are often used when the gender or number of the subject is unknown or unimportant.