• Noun: a period of indeterminate length (usually short) marked by some action or condition; examples: "he was here for a little while", "I need to rest for a piece", "a spell of good weather", "a patch of bad weather"
Work while you work, play while you play - this is a basic rule of repressive self-discipline.
I'm looking to expand my portfolio while I'm on top and while I'm young.
I've been making music for a while. And I could read about myself on the Internet for a while.