syllabub or (rare) sillabub /silˈə-bub/

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

• spherical polygons
• spherical triangle
• spherical triangles
• spherical trigonometries
• spherical trigonometry
• springers
• springes
• spring fever
• spring fevers
• springform
• springhaas
• springhalt
• springhalts
• spring hare
• springhase
• springhead
• springheads
• spring-heeled
• spring-heeled Jack
• springhouse
• springhouses
• springier
• springiest
• springily
• springiness