Enervate (4)
'enervate' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for sap that I've seen before include "Drain - vital fluid" , "Deplete, drain of resources" , "Cosh; plant's juice" , "One is easily fooled" , "Watery substance in plants" .)
'enervate' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for tire that I've seen before include "Grow weary of rite" , "Fatigue" , "Get weary" , "Weaken" , "Exhaust" .)