RhymeZone: non-verbal definitions

Definitions of non-verbal:

adjective: (of communication) In a form other than written or spoken words, such as gestures, facial expressions or body language.
adjective: (grammar, somewhat rare) Of or relating to a word that belongs to any part of speech other than that of verbs
adjective: (pathology) Unable to speak.
noun: A sound, gesture, etc. that is not a word.

(Definitions from Wiktionary)