fill out in WordNet English dictionary

1. write all the required information onto a form
   "fill out this questionnaire, please!"; "make out a form"
   complete  fill out  fill in  make out 
   
2. supplement what is thought to be deficient
   "He eked out his meager pay by giving private lessons"; "Braque eked out his collages with charcoal"
   eke out  fill out 
   
3. make fat or plump
   "We will plump out that poor starving child"
   fatten  fat  flesh out  fill out  plump  plump out  fatten out  fatten up 
   
4. become round, plump, or shapely
   "The young woman is fleshing out"
   round  flesh out  fill out 
   
5. make bigger or better or more complete
   round out  fill out 
   
6. line or stuff with soft material
   "pad a bra"
   pad  fill out 
   

fill out in English Wiktionary