Slash large tree at end of lane (8)
I believe the answer is:
lacerate
'slash' is the definition.
(I've seen this before)
'large tree at end of lane' is the wordplay.
'large' becomes 'L' (eg in clothes sizes).
'tree' becomes 'acer' (I've seen this in other clues).
'end of' says to take the final letters.
The final letter of 'lane' is 'e'.
'l'+'acer'+'at'+'e'='LACERATE'
(Other definitions for lacerate that I've seen before include "Tear, wound, hurt" , "Tear or make deep cuts" , "Cut, leaving jagged edges" , "Injure be tearing, wound roughly" , "Tear or gash roughly" .)