purpose-n; 6 Senses

Sense Number 1: an intended goal or outcome

Commentary: PURPOSE[+state][+goal][+intended]
NOTE: refers to a state of affairs that is desired by some agent

Examples:
My purpose in giving that party was to introduce Mary to some bachelors.
The philosopher argued that there is no purpose to the universe.
What is the purpose of antagonizing their government at this point in time?

Mappings:
WordNet 3.0 Sense Numbers: 1

Sense Number 2: the intended function or role of something

Commentary: PURPOSE[+relation][+role][+utility][+intended]
NOTE: refers to the function or utility of an object

Examples:
The purpose of the guard rail is to keep cars from veering off the road over the cliff.
Pensions are considered as earned income for tax purposes. (in the role of an asset)
We stared at the metal object but could not guess its purpose.

Mappings:
WordNet 3.0 Sense Numbers: 2

Sense Number 3: the quality of determination

Commentary: PURPOSE[+quality][+behavioral][+determination]
NOTE: refers to a trait or behavior of an agent.

Examples:
He strode into the building with great purpose.
The purpose in their eyes had gradually been replaced by fear and doubt.

Mappings:
WordNet 3.0 Sense Numbers: 3

Sense Number 4: intentionally

Commentary: Idiom: on_purpose

Examples:
He set the house on fire on purpose.
I don't think she insulted Mary on purpose.

Mappings:
WordNet 0.0 Sense Numbers: Idiom

Sense Number 5: without success, pointlessly

Commentary: Idiom to_no_purpose

Examples:
Frantically he shouted a warning to them, but to no purpose.
She felt her efforts to help the boy were to no purpose.

Mappings:
WordNet 0.0 Sense Numbers: Idiom

Sense Number 6: relevant, useful

Commentary: Idiom: to_the_purpose

Examples:
You may find some old tool in the basement that is to the purpose.

Mappings:
WordNet 0.0 Sense Numbers: Idiom