A multi-axis breakaway joint system for a boom of an agricultural sprayer is provided that is configured to allow a breakaway boom segment to deflect in compound directions through more than one plane. The multi-axis breakaway joint system may include a compound hinge assembly interconnecting the first and breakaway boom segments. The compound hinge assembly has a first hinge arrangement configured to allow deflection of the breakaway boom segment in a first direction of deflection. A second hinge arrangement is configured to allow deflection of the breakaway boom segment in a second direction of deflection. The first and second hinge arrangements allow for variable amounts of deflection in the first and second directions of deflection with respect to each other.
