Fruit tree, pear, lies damaged (8)
I believe the answer is:
espalier
'fruit tree' is the definition.
(I've seen this before)
'pear lies damaged' is the wordplay.
'damaged' indicates an anagram.
'pear'+'lies'='pearlies'
'pearlies' is an anagram of 'ESPALIER'.
(Other definitions for espalier that I've seen before include "Lattice-work for training trees" , "Fruit tree that grows flat against the wall" , "Lattice-work for tree-training" , "Trellis for training fruit trees" , "garden frame" .)