Come apart at the edge (4)
I believe the answer is:
fray
(Other definitions for fray that I've seen before include "Combat - wear" , "Show effects of strain" , "Unravel at the edges" , "Become ragged" , "Unravel at an edge" .)
I believe the answer is:
fray
(Other definitions for fray that I've seen before include "Combat - wear" , "Show effects of strain" , "Unravel at the edges" , "Become ragged" , "Unravel at an edge" .)