The number five, used as a numeral. Often used in counting objects, especially in the traditional Japanese counting system.
There are five apples on the desk.
five years old
Used to indicate the age of five, especially for children. Common in phrases like 五つになる (turn five).
My daughter will be five this year.
eight o'clock (old time system)
In the old Japanese temporal hour system, 五つ corresponded to approximately 8 a.m. or 8 p.m. Rarely used in modern contexts except in historical or literary settings.
In the Edo period, 五つ referred to around 8 a.m. in the modern time system.
There are five apples on the table.
My daughter is about to turn five.