1. extra; kept in reserve for use when needed
2. available for use; not being used
3. thin; lean

1. to give or lend something that one can do without
2. to refrain from harming or destroying
3. to use less of something; to be frugal with

1. an extra item kept in case it is needed

Examples

• I keep a spare tire in my car trunk.
• Do you have any spare change for the parking meter?
• Can you spare a few minutes to help me?
• The king decided to spare the prisoner’s life.
• She has a spare, athletic build from years of running.
• We should spare no expense for this important project.
• I always carry spare batteries for my flashlight.