Noah Webster's Dictionary 1. (n.) The quality or state of being round in shape; as, the roundness of the globe, of the orb of the sun, of a ball, of a bowl, a column, etc. 2. (n.) Fullness; smoothness of flow; as, the roundness of a period; the roundness of a note; roundness of tone. 3. (n.) Openness; plainness; boldness; positiveness; as, the roundness of an assertion.

Multi-Version Concordance Roundness (1 Occurrence) Song of Songs 7:2 Thy waist 'is' a basin of roundness, It lacketh not the mixture, Thy body a heap of wheat, fenced with lilies, (YLT)