An Etymological Dictionary of Astronomy and Astrophysics

1. Liability or exposure to harm or injury; risk; peril.
   

2. An instance or cause of peril; menace (Dictionary.com).

Etymology (EN): M.E. daunger, from O.Fr. dangier “power, power to harm, authority, control,” alteration of dongier, from V.L. *dominarium “power of a lord,” from L. dominus “lord, master,” → domain.

Etymology (PE): Xatar “danger,” loan from Ar.