You mean it doesn't mean "To slide down a stairway in the upright position. The slider, or "zibbler" may also be sitting on a pillow, in a sleeping bag...", as its phantom Wikipedia entry might have us believe?
*Cancels arrangements for zibbling party scheduled for Friday night*
What have we learned? That a zizel, or suslik is either a "rather large ground squirrel", or a chipmunk. Maybe Chip and Dale are known as "sus" and "lik" in Slavic countries.