1. to use up or consume (something, especially money, time, or energy)
2. to use (effort or energy) for a particular purpose

Examples

• The company will expend millions on the new research project.
• She expended considerable effort to finish the assignment on time.
• Don’t expend all your energy on the first part of the race.
• The government expended vast resources on the infrastructure program.
• He expended his entire savings on the business venture.
• The team expended great care in planning the event.