Bit of a joint where any number's ten out (5)
I believe the answer is:
tenon
'bit of a joint' is the definition.
'tenon' can be an answer for 'joint' (I've seen this before). I am unsure of the 'bit of a' bit.
'any number's ten out' is the wordplay.
'any number' becomes 'no' (abbreviation for 'number'. I am not sure about the 'any' bit.).
'out' indicates putting letters inside.
'no' inserted into 'ten' is 'TENON'.
'where' acts as a link.
Can you help me to learn more?
(Other definitions for tenon that I've seen before include "Part of woodworking joint" , "Wood fitting into a mortise" , "Piece of wood that fits into a mortise" , "Mortise counterpart" , "Connection" .)