Sentence:  Gahan, horrified, saw the latter's head topple from its body, saw the body stagger and fall to the ground. ... The creature that had <WSD>felled</WSD> its companion was dashing madly in the direction of the hill upon which he was hidden, it dodged one of the workers that sought to seize it. … Then it was that Gahan's eyes chanced to return to the figure of the creature the fugitive had <WSD>felled</WSD>. 
Meaning of the word marked with <WSD> tags:  To strike down, kill, destroy.