"First, do no ___" (physician's maxim)
I believe the answer is:
harm
(Other definitions for harm that I've seen before include "Wound" , "Trials, exams" , "See 13" , "Damage, hurt" , "Injure, injury" .)
I believe the answer is:
harm
(Other definitions for harm that I've seen before include "Wound" , "Trials, exams" , "See 13" , "Damage, hurt" , "Injure, injury" .)