“While” is a word in the English language that functions both as a noun and as a subordinating conjunction. Its meaning varies largely based on its intended function, position in the phrase and even the writer or speaker’s regional dialect. As a conjunction, it is synonymous with the word “whilst”, a form often considered archaic in American English, as well as in some style guides on both sides of the Atlantic.
An uncertain duration of time, a period of time.
“He lectured for quite a long while.”
During the same time that.
“He was sleeping while I was singing.”
“This case, while interesting, is a bit frustrating.”
“I’ll wait while you’ve finished painting.”
As long as.
“While you’re at school you may live at home.”
To pass (time) idly.
sometimes; at times