A highly liberal person (a democrat) who lives an upper-class (
republican) lifestyle enabled by wealth. Holds philosophically correct liberal positions that they couldn't hold if they weren't so well protected and insulated (through their wealth and power) from the side-effects of those positions. Some common issues include: homeless rights, non-native species removal, etc.
Some Limosine Liberals are thoroughly
conservative but publically liberal only in certain areas that are safe for them-- a classic example being: supporting arts organizations that present controversial art.
See: most local
politicians in San Francisco, Berkeley, and Marin counties, California