Definition - A word that has been created from a verb but which don't function as a verb in a sentence.

Example -
Some types of verbals are:
(1) gerunds (the ing form of a verb used as a noun, e.g. living well is the best revenge.
(2) infinitives (the uninflected form of a verb, e.g. to be or not to be.)
(3) participles (verbs used as modifiers, e.g. a dancing fool.)

Etymology -
The word ultimately derives from the Latin verbalis, consisting of words or pertaining to verbs (from verbum, word).

Oxford English Dictionary -
Its first citation is from 1530:
"Broderésse, a woman brodurar, … tenceresse, a woman chyder; and so of all other verballes."
(Jehan Palsgrave, Lesclarcissement de la langue françoyse, 154)

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