  We consider a coupled system of partial and ordinary differential equations
describing the interaction between an isentropic inviscid fluid and a rigid
body moving freely inside the fluid. We prove the existence of measure-valued
solutions which is generated by the vanishing viscosity limit of incompressible
fluid-rigid body interaction system under some physically constitutive
relations. Moreover, we show that the measure-value solution coincides with
strong solution on the interval of its existence. This relies on the
weak-strong uniqueness analysis.
