A pronoun is a word that is used to replace a noun [a person, place, or thing] in a sentence, to avoid repeating the same noun over and over. For example, instead of saying “Mary went to Mary’s house and Mary saw Mary’s cat,” you can use pronouns to say “Mary went to her house and she saw her cat” instead. Pronouns include words like “he,” “she,” “it,” “they,” “we,” and “you.”
Very Simple Definition:
A pronoun is a word we use instead of repeating a noun, like saying “she” instead of “Mary,” or “it” instead of “the dog.” Pronouns help us speak and write more easily and avoid repeating the same words over and over.