syllabub or (rare) sillabub /silˈə-bub/

1. A dish of cream curdled (eg with wine), flavoured and frothed up
2. Anything frothy or insubstantial

• oast house
• oast houses
• oasts
• oat
• oatcake
• oatcakes
• oaten
• oater
• oaters
• oat grass
• oat grasses
• oath
• oathable
• oath-breaking
• oaths
• oatier
• oatiest
• oatmeal
• oatmeals
• oats
• oaty
• OAU
• oaves
• ob
• ob.