Horologium

Synonym of Tower of the Winds, a monument in ancient Athens that included a clepsydra and multiple prominent sundials.

Synonym of Solarium, a monument in ancient Rome whose obelisk was once believed to have acted as a sundial gnomon.

A constellation of the southern sky, said to resemble a pendulum clock. It lies between the constellations Fornax and Dorado.

Alternative letter-case form of horologium, the book of hours in the Eastern Orthodox and Catholic churches.