Alas, pro misplaced umbrella (7)
I believe the answer is:
parasol
'umbrella' is the definition.
(I've seen this before)
'alas pro misplaced' is the wordplay.
'misplaced' is an anagram indicator.
'alas'+'pro'='alaspro'
'alaspro' anagrammed gives 'PARASOL'.
(Other definitions for parasol that I've seen before include "Light umbrella giving shade from sun" , "for protection from the elements" , "Protection from sun" , "sunblock" , "mushroom" .)