On the patient's back, several tense bullae had formed after the burn.

The Bulla family moved into the historic brownstone on Maple Street.

In late summer the hedgerows were heavy with bullaces, their sharp-sweet scent filling the air.

In late summer we gathered bullace from the hedgerow to make jam.

The surgeon noticed a small bulla on the patient's lung during the operation, which required careful removal to prevent complications.

At the family gathering, my aunt brought a homemade bulla that everyone enjoyed with their coffee.