What is the meaning of Non-verbal?

In a form other than written or spoken words, such as gestures, facial expressions or body language.

Of or relating to a word that belongs to any part of speech other than that of verbs.

Unable to speak.

A sound, gesture, etc. that is not a word.

non-verbal (in a form other than written or spoken words, such as gestures, facial expressions or body language)

Source: wiktionary.org