1. the cost or amount of money needed to buy or do something
2. money spent on something, especially for business purposes
Usage: often plural

Examples

• The expense of college tuition keeps rising every year.
• We need to cut expenses to balance our budget.
• The company will cover all travel expenses for the conference.
• Buying a new car is a major expense for most families.
• She keeps track of her daily expenses in a notebook.
• The wedding was beautiful, but it came at great expense.
• Medical expenses can be overwhelming without insurance.