Pope: Rape of the Lock

64. 3. Too hot or strong to last; exceedingly great; exhausting; as, a killing pace. C. As subst.: The act of depriving of life or animation. "There must be an actual killing to constitute murder.' -Black stone: Comment., bk. iv., ch. 14. kill-ing-ly, adv. [Eng. killing; -ly.] 1. Lit .: In a killing manner, so as to kill. 2. Fig .: In a fascinating or irresistible manner; as, to look at one killingly . kilt