The Latin word lacus means "opening, hole, pool, lake," and was also the word for a distribution point in the public water supply of ancient Rome. It can refer to:
Geography Lucrinus Lacus, a lake in Campania Albanus Lake, Lake Albano in Lazio, Italy Alsietinus Lacus, the ancient name of a lake in Etruria today known as Lake Martignano Lacus Curtius, a topographical feature in ancient Rome Lacus Juturnae, a spring and man-made religious structure in ancient Rome
Scientific Lacus (beetle), a genus in the family Eucnemidae Lacus may refer to a lunar mare; see List of maria on the Moon: Lacus Aestatis Lacus Autumni Lacus Bonitatis Lacus Excellentiae Lacus Felicitatis Lacus Mortis Lacus Solitudinis Lacus Somniorum Lacus Spei Lacus Temporis
Lacus may also refer to similar features on other celestial bodies: Ontario Lacus on Titan, a moon of Saturn Solis Lacus on Mars
Fictional characters Lacus Clyne from Mobile Suit Gundam SEED and Mobile Suit Gundam SEED Destiny anime.
Associations Linguistic Association of Canada and the United States
See also Lacuna (disambiguation)