round out

definition: make round
example:
speech part: verb
synonyms: round
definition: express as a round number
example:
speech part: verb
synonyms: round
definition: make bigger or better or more complete
example:
speech part: verb
synonyms: fill out
definition: fill out
example: These studies round out the results of many years of research
speech part: verb
synonyms: finish out

How round out is being used?