Bent German sausage? Not half (5)

I believe the answer is:
knack
(Other definitions for knack that I've seen before include "Tendency to do something" , "Particular talent" , "Special talent" , "Ability, facility" , "Slope" .)
I believe the answer is:
knack
(Other definitions for knack that I've seen before include "Tendency to do something" , "Particular talent" , "Special talent" , "Ability, facility" , "Slope" .)