Sentence:  By early summer , he wrote from Laramie that he was suffering from the <WSD>wound</WSD> inflicted in the ambush and was in a bad way financially , so Pels sent him a draft for $ 100 , warning that it was still not wise for him to return . 
Meaning of the word marked with <WSD> tags:  an injury to living tissue (especially an injury involving a cut or break in the skin)