  The existence of the dust acoustic wave (DAW) in a strongly magnetized
electron-positron (pair)-dust plasma is demonstrated. In the DAW, the restoring
force comes from the pressure of inertialess electrons and positrons, and the
dust mass provides the inertia. The waves could be of interest in astrophysical
settings such as the supernovae and pulsars, as well as in cluster explosions
by intense laser beams in laboratory plasmas.
