滑り止め

すべりどめsuberidome

noun · adjectival

1. non-slip device (material, tread, etc.)
2. non-skid
3. anti-slip
4. anti-skid
5. back-up option (esp. with regard to university admissions)
6. back-up choice
7. insurance choice
8. contingency option

Study it in Yanamino