fem. proper name, from O.H.G. Berahta, Perahta,
the name of a goddess, lit. "the bright one," from O.H.G. beraht
, related to O.E. beorht
). Soldiers' nickname Big Bertha
for large-bore Ger. mortar of World War I is a reference to Frau Bertha
Krupp von Bohlen und Halbach, owner of Krupp steel works 1903-43.