noun
free time; spare time; leisure
Polite noun for free time; often used in formal situations or when speaking to/about someone of higher status.
お暇なときにぜひ遊びに来てください。
Please come visit when you have some free time.
お忙しいところ恐れ入りますが、お暇をいただけませんか。
I'm sorry to bother you when you're busy, but could you spare me some time?