witches' bells

plural plural-only

The plant foxglove.

Japanese Meaning

ジギタリス（別名：ウィッチズ・ベルズ、ウィッチズベルとも）

In the shady garden, the witches' bells nodded their tubular blooms like tiny lanterns.

日陰の庭で、ジギタリスが小さなランタンのように筒状の花を揺らしていた。

Sense（1）

The plant foxglove.

Foxgloves were called "Witches Bells", and were used by them for love philtres.