cloche

A bell-shaped, transparent cover used to protect young plants from cold or pests.

"Gardeners use a cloche to protect early seedlings."

A bell-shaped cover placed over food, often to keep it warm or for presentation.

"The waiter lifted the cloche to reveal the main course."

A close-fitting, bell-shaped hat, popular with women in the 1920s.

"She completed her flapper outfit with a cloche."