a person or other agent guilty of or responsible for an offense or fault.
2.
a person arraigned for an offense.
Origin: 1670–80; traditionally explained as cul (repr. L culpābilis guilty) + prit (repr. AF prest ready), marking the prosecution as ready to prove the defendant's guilt. See culpable, presto
[Probably from cul. prit, abbreviation for Anglo-Norman *culpable: prit d'averrer nostre bille, guilty: (I am) ready to aver our indictment : culpable, guilty (from Latin culpābilis; see culpable) + *prit, ready (variant of prest, from Latin praestō; see presto).]