Source : Webster's Revised Unabridged Dictionary (1913)

Inrush \In"rush`\, n.
   A rush inwards; as, the inrush of the tide. --G. Eliot.

Inrush \In*rush"\, v. i.
   To rush in. [Obs.] --Holland.

Source : WordNet®

inrush
     n : an inflow; "an inpouring of spiritual comfort" [syn: {inpouring},
          {inpour}]