Last from Monkhouse joke stock (5)
I believe the answer is:
equip
'stock' is the definition.
(thesaurus)
'last from monkhouse joke' is the wordplay.
'last from' indicates one should take the final letters.
'joke' becomes 'quip' (a quip is a joke or witticism).
The final letter of 'monkhouse' is 'e'.
'e'+'quip'='EQUIP'
(Other definitions for equip that I've seen before include "Supply (with items)" , "Give kit to" , "Furnish, fit out" , "Provide stuff" , "Provide with kit" .)