Nulls meaning : A non-existent or empty value or set of values. Zero quantity of expressions; nothing. Something that has no force or meaning. The ASCII or Unicode character (␀), represented by a zero value, that indicates no character and is sometimes used as a string terminator. The attribute of an entity that has no valid value. One of the beads in nulled work. Null hypothesis. To nullify; to annul. To form nulls, or into nulls, as in a lathe. To crack; to remove restrictions or limitations in (software).