1. Occurring once every 20 years

See also: twenty

• rolled into one
• rolled oats
• roller
• roller bandage
• roller bearing
• roller bit
• roller blind
• roller coaster
• roller skate
• roller skating
• roller towel
• roller-skater
• Rollerblade
• rollerblader
• rollerblading
• rollick
• rollicking
• rollickingly
• rolling
• rolling hitch
• rolling mill
• rolling paper
• rolling pin
• rolling stock
• rolling stone