What is the definition of interjection?

Answer 1

A word or group of words used to express surprise or a sudden feeling

(APEX)

Answer 2

To throw in between; to insert; to interpose., To throw one's self between or among; to come between; to interpose.

Answer 3

An interjection is a word or phrase used to express a sudden or strong feeling or emotion. It is often used independently to convey an emotion or reaction in a conversation or sentence. Interjections are typically followed by an exclamation point to indicate their intensity.