[per.il] n [ME, fr. OF, fr. L periculum--more at fear] (13c) 1: exposure to the risk of being injured, destroyed, or lost: danger "fire put the city in ~"
2: something that imperils: risk "lessen the ~s of the streets"
[2]peril vt -iled also -illed ; -il.ing also -il.ling (1567): to expose to danger