something-n; 3 Senses

Sense Number 1: the quality of significance, consequence

Commentary: SOMETHING[+quality][+significance]

That performance of La Traviata was really something!
A thirty-foot whale shark is something to see.
She is truly something.

WordNet 0.0 Sense Numbers: 2

Sense Number 2: an indeterminate amount, or degree, of a quality

Commentary: SOMETHING[+quantity][+indeterminate][+degree/+amount]

The lecture was something of a bore.
She is actually something of a philanthropist.
The party turned into something of a row.

WordNet 0.0 Sense Numbers: 3

Sense Number 3: the quality of specialness or impressiveness

Commentary: Idiom: something_else

That new chef at Le Bistro is something else!
Mary's wedding gown was something else.
John said his ride in the MIG was something else.

WordNet 0.0 Sense Numbers: something_else