The noun BETEL NUT has 1 sense: 1. seed of betel palm; chewed with leaves of the betel pepper and lime as a digestive stimulant and narcotic in southeastern Asia.Familiarity information: BETEL NUT used as a noun is very rare.eed of betel palm; chewed with leaves of the betel pepper and lime as a digestive stimulant and narcotic in southeastern Asia.
Princeton's WordNet(2.67 / 3 votes)Rate this definition: 1  repose, quiet, placidity, serenity, tranquillity, tranquility(noun) a disposition free from stress or emotion. 2  tranquillity, tranquility, quiet(noun) an untroubled state; free from disturbances. 3  tranquillity, tranquility, quietness, quietude(noun) a state of peace and quiet.
The phrase insure domestic tranquility, which is found in the Preamble to the United States Constitution, refers to the need to keep the peace and the assurance that people can conduct their lives...