VERB (3)

1. return or recoil;
- Example: "Fame redounds to the heroes"

2. contribute;
- Example: "Everything redounded to his glory"

3. have an effect for good or ill;
- Example: "Her efforts will redound to the general good"

The Collaborative International Dictionary of English v.0.48:

Redound \Re*dound"\ (r?*dound"), v. i. [imp. & p. p.
   Redounded; p. pr. & vb. n. Redounding.] [F. redonder, L.
   redundare; pref. red-, re-, re- + undare to rise in waves or
   surges, fr. unda a wave. See Undulate, and cf.
   Redundant.]
   1. To roll back, as a wave or flood; to be sent or driven
      back; to flow back, as a consequence or effect; to
      conduce; to contribute; to result.
      [1913 Webster]

            The evil, soon
            Driven back, redounded as a flood on those
            From whom it sprung.                  --Milton.
      [1913 Webster]

            The honor done to our religion ultimately redounds
            to God, the author of it.             --Rogers.
      [1913 Webster]

            both . . . will devour great quantities of paper,
            there will no small use redound from them to that
            manufacture.                          --Addison.
      [1913 Webster]

   2. To be in excess; to remain over and above; to be
      redundant; to overflow.
      [1913 Webster]

            For every dram of honey therein found,
            A pound of gall doth over it redound. --Spenser.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Redound \Re*dound"\, n.
   1. The coming back, as of consequence or effect; result;
      return; requital.
      [1913 Webster]

            We give you welcome; not without redound
            Of use and glory to yourselves ye come. --Tennyson.
      [1913 Webster]

   2. Rebound; reverberation. [R.] --Codrington.
      [1913 Webster]

WordNet (r) 3.0 (2006):

redound
    v 1: return or recoil; "Fame redounds to the heroes"
    2: contribute; "Everything redounded to his glory"
    3: have an effect for good or ill; "Her efforts will redound to
       the general good"