Split along a natural weakness (6)
I believe the answer is:
cleave
(Other definitions for cleave that I've seen before include "Split as with axe" , "Split apart - stick together" , "Cut (with an axe?)" , "Chop or stick to" , "remain attached" .)
I believe the answer is:
cleave
(Other definitions for cleave that I've seen before include "Split as with axe" , "Split apart - stick together" , "Cut (with an axe?)" , "Chop or stick to" , "remain attached" .)