fill out

definition: become round, plump, or shapely
example:
speech part: verb
synonyms: round
definition: make bigger or better or more complete
example:
speech part: verb
synonyms: round out
definition: write all the required information onto a form
example: fill out this questionnaire, please!
speech part: verb
synonyms: complete
definition: make fat or plump
example:
speech part: verb
synonyms: plump
definition: line or stuff with soft material
example:
speech part: verb
synonyms: pad
definition: supplement what is thought to be deficient
example:
speech part: verb
synonyms: eke out

How fill out is being used?