Source : Webster's Revised Unabridged Dictionary (1913)

Egress \E"gress\, n. [L. egressus, fr. egredi to go out; e out +
   gradi to go. See {Grade}.]
   1. The act of going out or leaving, or the power to leave;
      departure.

            Embarred from all egress and regress. --Holland.

            Gates of burning adamant, Barred over us, prohibit
            all egress.                           --Milton.

   2. (Astron.) The passing off from the sun's disk of an
      inferior planet, in a transit.

Egress \E*gress"\, v. i.
   To go out; to depart; to leave.

Source : WordNet®

egress
     n 1: (astronomy) the reappearance of a celestial body after an
          eclipse [syn: {emersion}] [ant: {ingress}, {ingress}]
     2: the becoming visible; "not a day's difference between the
        emergence of the andrenas and the opening of the willow
        catkins" [syn: {emergence}, {issue}]
     3: the act of coming (or going) out; becoming apparent [syn: {egression},
         {emergence}]
     v : come out of; "Water issued from the hole in the wall"; "The
         words seemed to come out by themselves" [syn: {issue}, {emerge},
          {come out}, {come forth}, {go forth}]