Vex
Defined in 2 dictionaries — Black's (1910), Anderson (1889)
Black's Law Dictionary
Henry Campbell Black, M.A. · 1910
To harass, disquiet, annoy; as by repeated litigation upon the same facts.
A Dictionary of Law
William C. Anderson · 1889
To hara^, trouble, annoy. Said of a second suit or prosecution after another has been fairly tried on the merits and a verdict of acquittal or conviction rendered. " Vexatious litigation " is a common expression. See Vexaei.