There are two meanings for the term legs. First, it is the name of the liquid rivulets that form on the inside of a wineglass after the wine is swirled. The wine is swirled to evaluate the alcohol concentration present and the viscosity of the wine. Usually the higher the alcohol content, the more impressive the rivulets appear and the longer they take to trickle back down into the glass. This is a valuable technique when used in “blind” tasting competitions. Alternatively, it is used by some as a near synonym for “balance” as in “This wine has legs”, ie: underpinnings. In this sense, legs indicate that the wine has all the basic characteristics looked for when making an initial assessment.