What does "harebell" mean?

A perennial flowering plant, Campanula rotundifolia, native to the Northern Hemisphere, with blue, bell-like flowers.

Harebell

Common synonyms include: bluebell, bellflower, blawort, bluebell, campanula, campanula rotundifolia.

//ˈhɛəˌbɛl// noun

noun ·Uncommon ·Advanced level

Noun

1
A perennial flowering plant, Campanula rotundifolia, native to the Northern Hemisphere, with blue, bell-like flowers.
"How Snow-drops cold, and blue-eyed Harebells blend / Their tender tears, as o'er the stream they bend […]."
2
perennial of Northern Hemisphere with slender stems and bell-shaped blue flowers wordnet
3
foxglove
"I wonder whether the witches would be wearing on their fingers their ornaments of foxglove blossoms, often called witches' bells or harebells, sometimes known as witches' thimbles."
4
sometimes placed in genus Scilla wordnet