while
/waɪl/; /waɪl/ or /waɪl/ (UK)
Definitions
1. conjunction
used to indicate a contrast or a condition of something else
“I’ll study while my sister watches TV.”
2. preposition
during the time that something is happening or exists
“I’ll be on vacation while you’re at work.”
3. noun
a period of time spent doing something
“I took a break while I was working on the project.”
4. adverb
to a limited extent; partly
“She sings well while her friends dance.”