### Clue: Preserve order initially, drunk among native Americans (8)
### Answer: CREOSOTE 
 ### Explanation: Definition: Preserve
 [ **1st letter of**(… initially) "order" + SOT(a drunk/a habitually drunk person) ] **contained in**(among) CREE(native Americans/a North American indigenous people).
Defn: To …/treat wood with the preservative, creosote.