burden n1 : something that is a duty, obligation, or responsibility [the prosecution has the of proving every element of the offense] [the statute imposes undue s ] [ of pleading the necessary elements]
2 : burden of proof [the husband had not carried his on the insanity issue "Case & Comment "]
Source: Merriam-Webster's Dictionary of Law ©1996. Merriam-Webster, Incorporated. Published under license with Merriam-Webster, Incorporated.