Neither gets the number right (3)
I believe the answer is:
Here is my best explanation:
'neither' is the definition.
(I've seen this before)
'the number right' is the subsidiary indication.
'the number' becomes 'no' (no. is a kind of number).
'right' becomes 'r' (common abbreviation).
'gets' is the link.
(Other definitions for nor that I've seen before include "Common conjunction, goes with neither", "Link word", "link", "In addition, not", "And not; Norman (abbr.)", "Conjunction meaning 'and not'", "Neither one ... the other", "And not; neither", "Negative word" and "logic circuit".)