objective-n; 3 Senses

Sense Number 1: anything which is the intended goal

Commentary: OBJECTIVE[+relation][+role][+goal][+intended]

The commandos' objective was to secure a secret post behind enemy lines.
The sales force did not meet their objective for the second quarter.
What is the objective of the protagonist in this novel?

WordNet 3.0 Sense Numbers: 1

Sense Number 2: the lens of an optical instrument closest to the observed object

Commentary: OBJECTIVE[+entity][+artifact][+lens][+magnifying][+outermost][+of_instrument][+optical]

The objective of the microscope was slightly scratched.
The objective of this telescope is a refractive lens.

WordNet 3.0 Sense Numbers: 2

Sense Number 3: the objective grammatical case

Commentary: OBJECTIVE[+relation][+role][+grammatical][+case][+object]

Languages in this family mark objective case and intransitive nominal case the same way.
English indicates the objective case largely through word order, not through morphological markers.

WordNet 0.0 Sense Numbers: 2