glissade >> ɡlɪˈsɑːd
Definition: [noun] a way of sliding down a steep slope of snow or ice, typically on the feet with the support of an ice axe.
Definition: [noun] a movement, typically used as a joining step, in which one leg is brushed outwards from the body, which then takes the weight while the second leg is brushed in to meet it.
Definition: [verb] slide down a steep slope of snow or ice with the support of an ice axe.
Example: we wobbled down the line of ascent, glissading when we could