spare definition

1. an extra component of a machine or other apparatus
2. a score in tenpins; knocking down all ten after rolling two balls
3. refrain from harming
4. save or relieve from an experience or action
• examples: I'll spare you from having to apologize formally
5. give up what is not strictly needed
• examples: he asked if they could spare one of their horses to speed his journey
6. use frugally or carefully
7. thin and fit
• examples: the spare figure of a marathon runner
• examples: a body kept trim by exercise
8. not taken up by scheduled activities
• examples: a free hour between classes
• examples: spare time on my hands
9. kept in reserve especially for emergency use
• examples: a reserve supply of food
• examples: a spare tire
• examples: spare parts