refresh in WordNet English dictionary

1. refresh one's memory
   "I reviewed the material before the test"
   review  brush up  refresh 
   
2. make fresh again
   refresh  freshen  refreshen 
   
3. become or make oneself fresh again
   "She freshened up after the tennis game"
   freshen  refresh  refreshen  freshen up 
   
4. make (to feel) fresh
   "The cool water refreshed us"
   refresh  freshen