The name for this salient peak was bestowed by the first-ascent party. Tee-Win-At, as it was originally spelled, is, according to the first-ascent party, a Shoshone word meaning "pinnacles." This peak is certainly one of the most important of the Teton peaks both in placement and in size. From the Jenny Lake Visitor Center this mountain is the highest visible, and some visitors mistake it for the Grand Teton. Although a long climb of 5,600 feet, Teewinot is one of the more popular peaks. The ascent of Teewinot, however, should be taken seriously because the steep snow in the east face couloir has been the site of several accidents. Knowledge of the use of an ice axe is essential for early and mid-season climbs.