Wearies (5)
I believe the answer is:
tires
'wearies' is the definition.
('tire' can be a synonym of 'weary')
This is all the clue.
(Other definitions for tires that I've seen before include "Grows weary of rites" , "Becomes weary and in need of rest" , "Exhausts" , "Wearies" , "Weakens" .)