monolith-n; 3 Senses

Sense Number 1: a single tall stone, e.g., obelisk or monument

Commentary: MONOLITH[+stone][+single][+large][+vertical]

In the film, 2001: A Space Odyssey, scientists discover a black monolith sending signals towards Jupiter.
Many of the headstones in that old graveyard are granite monoliths.

WordNet 3.0 Sense Numbers: 1

Sense Number 2: any massive, featureless building

Commentary: MONOLITH[+building][+massive][-characteristics]
NOTE: implies a large building without interesting or notable features, characteristics

The travel magazine described the resort as a 72-story monolith overlooking the waterfront.
Mary works on the 44th floor in one of those gray monoliths in the financial district.

WordNet 0.0 Sense Numbers: 1b

Sense Number 3: a large, undifferentiated, impersonal organization

Commentary: MONOLITH[+organization][+large][+uniform][+impersonal][+commercial/+political]

He felt lost in the corporate culture of that vast conglomerate monolith.
They wanted to break free from the monolith of the Moscow-dominated communist party.

WordNet 0.0 Sense Numbers: 2