nounGRAMMAR
noun: verb; plural noun: verbs
1.
a word used to describe an action, state, or occurrence, and forming the main part of the predicate of a sentence, such as hear, become, happen.
verb
verb: verb; 3rd person present: verbs; past tense: verbed; past participle: verbed; gerund or present participle: verbing
1.
use (a word that is not conventionally used as a verb, typically a noun) as a verb.
"any English noun can be verbed, but some are more resistant than others"
Origin

late Middle English: from Old French verbe or Latin verbum ‘word, verb.’