Source : WordNet®

round out
     v 1: fill out; "These studies round out the results of many years
          of research" [syn: {finish out}]
     2: make bigger or better or more complete [syn: {fill out}]
     3: express as a round number; "round off the amount" [syn: {round
        off}, {round down}, {round}]
     4: make round; "round the edges" [syn: {round}, {round off}]