syllabub

Meanings

1. A drink dating back to the 16th century consisting primarily of milk curdled with an alcoholic beverage or some acid such as lemon juice, which is usually then sweetened and spiced.
2. A dessert pudding derived from the drink.
3. Something lacking substance; something frothy, insubstantial, or lightweight.

Etymology

Origin unknown; the spelling may have been influenced by the unrelated word syllable.