Short definition
A wine that feels smooth and full in the mouth with no harsh edges from tannin or acidity.
A round wine coats your mouth evenly — no sharp acidity poking out, no aggressive tannins. Merlot is often called round. The sensation is like the difference between a sharp cheddar (angular) and a triple-cream brie (round). Warmth, ripe fruit, and moderate tannins create roundness. Some tasters prefer angular wines for their energy.