[すべりどめ, suberidome](n) (1) tyre chains; anti-skid device; (2) backup measure; taking entrance examination to a university in case one fails at other universities[Add to Longdo]
[すべる, suberu](v5r, vi) (1) to glide; to slide (e.g. on skis); to slip; (2) to fail (an examination); to bomb (when telling a joke); (3) to drop; to go down; to come down; to fall (e.g. in status); (P)[Add to Longdo]