Count, more insensitive? (6)
I believe the answer is:
number
I believe this is a double definition.
'count' is the first definition.
('number' can be a synonym of 'count')
'more insensitive?' is the second definition.
('numb' can be a synonym of 'insensitive')
(Other definitions for number that I've seen before include "Part of musical" , "For example, one" , "Arithmetical value; song" , "Count, musical item" , "Digit, integer" .)