in the fingering for stringed instruments, that the note over which it is placed is to be played on an open string, Something that has no force or meaning, One of the beads in nulled work, adjective_ Of no legal or binding force or validity; of no efficacy; invalid; void; nugatory; useless, (Computers) Unassigned or meaningless; -- a special value given to variables, especially pointers or logical variables, indicating that it is meaningless and cannot be used in computation. The actual value that is stored in memory to indicate the null condition may vary with the computer language used, absent or non-existent, transitive verb_ To make null, to nullify