free time that you can use as you like
I read books in my spare time.
not being used or needed now
Do you have a spare pen I can use?
extra, kept for when you need it
Always carry a spare tire in your car.
thin and often tall
The spare man moved quickly through the crowd.
to give time or money when it's hard for you
Can you spare a few minutes to help me?
to save someone from something bad
I'll spare you the details to avoid upsetting you.
to not harm or kill when others are harmed
The storm spared our house but damaged others.
to use as much as needed without limiting
They spared no expense on the wedding.
to work very hard
He spared no effort to finish the project on time.
an extra item kept for replacement
I keep a spare key hidden outside my house.
replacement parts for machines or cars
The mechanic ordered spare parts for the old engine.