Wordnet 3.0
VERB (2)
1. 
 admit anew; 
- Example: "The refugee was readmitted into his home country"2. 
 admit again or anew; 
- Example: "After paying a penalty, the player was readmitted"
The Collaborative International Dictionary of English v.0.48:
Readmit \Re`ad*mit"\ (-m[i^]t"), v. t.
   To admit again; to give entrance or access to again.
   [1913 Webster]
         Whose ear is ever open, and his eye
         Gracious to readmit the suppliant.       --Milton.
   [1913 Webster]
WordNet (r) 3.0 (2006):
readmit
    v 1: admit anew; "The refugee was readmitted into his home
         country"
    2: admit again or anew; "After paying a penalty, the player was
       readmitted"