1. Plural of calluna; a genus of low-growing evergreen shrubs with small needle-like leaves and clusters of small flowers, native to Europe and Asia Minor.
Usage: botanical term; often used in gardening and horticulture contexts

Examples

• The garden featured several varieties of callunas in shades of pink and purple.
• Callunas are popular ornamental plants in temperate climates.
• The moorland was covered with wild callunas blooming in late summer.
• Gardeners often plant callunas for their hardiness and low maintenance requirements.