noun

• An unincorporated community in Green, Sussex, New Jersey, United States
• An unincorporated community in Adams, Ohio, United States
• US standard spelling of tranquillity. [The state of being tranquil; peacefulness, the absence of disturbance or stress; serenity; calm.]
• Ellipsis of Sea of Tranquility. [(planetology) A basin in Nearside, Moon, Earth, Solar System; location of the first manned moon landing, in 1969.]