1. a tall evergreen tree native to Australia, with aromatic leaves that yield an oil used in medicine and industry
Usage: often used in the plural form 'eucalypti' or 'eucalyptuses'; commonly grown in warm climates worldwide
2. the aromatic oil extracted from eucalyptus leaves, used in cough drops, liniments, and other products
Usage: also called eucalyptus oil

Examples

• The eucalyptus tree grows rapidly in warm climates.
• Koalas feed almost exclusively on eucalyptus leaves.
• She rubbed eucalyptus oil on her chest to help clear her sinuses.
• The garden featured several tall eucalyptus trees with peeling bark.
• Eucalyptus is commonly used in natural cough remedies.
• The scent of eucalyptus filled the room when she opened the bottle.