spell out in WordNet English dictionary

1. orally recite the letters of or give the spelling of
   "How do you spell this word?" "We had to spell out our names for the police officer"
   spell  spell out 
   
2. make explicit; specify in detail
   "You should spell out your demands"
   spell out 
   
3. spell fully and without abbreviating
   "Can you spell out your middle name instead of just giving the initial?"
   spell out 
   

spell out in English Wiktionary