The crossword solution for the term 'burden or weight' is 'LOAD'. A LOAD is a force or weight that is carried or supported by a person, vehicle, or other object. It can also refer to the amount of work or responsibility that someone has to carry. In physics, a LOAD is a force applied to a structure that causes it to deform. In electrical engineering, a LOAD is an electrical device that consumes energy from a power source.