The damage to unopened palm fronds is a good example of “fraying”. The second photo shows a native Sulphur Crested Cockatoo (Cacatua galerita), the ‘vandal’ that causes this fraying. It is the beaks and claws that do the damage, rather than simple ‘rubbing’, but the result lasts for the life of the frond.
This entry is my response to the challenge of what ‘fray’ means to me. Other entries will be found over at The Daily Post here