what is a gerund?
Gerund. Definition: A gerund is the form of a verb when it acts as a noun; a gerund (often known as an-ing word) is a noun formed from a verb by adding-ing.For example: 1  Studying is good for you.erund. Definition: A gerund is the form of a verb when it acts as a noun; a gerund (often known as an-ing word) is a noun formed from a verb by adding-ing. For example: