the intention, aim or function of something; the thing that something is supposed to achieve

These gifts count as income for tax purposes.

The building was originally used for commercial purposes.

For the purposes of this study, the three groups have been combined.

meaning that is important and valuable to you

Volunteer work gives her life a sense of purpose.

He believes he has finally found a purpose in life.

the ability to plan something and work successfully to achieve it

He has enormous confidence and strength of purpose.

LEARNit Dictionary