period

US /ˈpɪr.i.əd/
UK /ˈpɪr.i.əd/
"period" picture
1.

a length or portion of time

:
The Roman Empire lasted for a long period.
She went through a difficult period in her life.
2.

a punctuation mark (.) used at the end of a sentence or abbreviation

:
Remember to put a period at the end of every sentence.
The abbreviation for 'doctor' is 'Dr.' with a period.
3.

the flow of blood from the uterus that occurs in women and female primates about once a month

:
She's on her period this week.
Many women experience cramps during their period.
1.

used to emphasize that something is final and will not be changed

:
I said no, period.
This is how it's going to be, period.