individual-n; 2 Senses

Sense Number 1: one person, one human being

Commentary: INDIVIDUAL[+person][+lone]

Examples:
The cruise ship has staterooms available for families as well as individuals.
Bob is one of the most peculiar individuals I've ever known.
She is a hardy individual, living in a cabin at the mountain summit.

Mappings:

Sense Number 2: a single living organism, plant or animal

Commentary: INDIVIDUAL[+organism][+single][+animal/+plant/+bacterium]

Examples:
These are herd animals that live in groups rather than as individuals.
The scientists can monitor these trees down to each individual in the forest.

Mappings:
WordNet 3.0 Sense Numbers: 2