standing by at home (e.g. to prevent the spread of illness) / being on furlough; being temporarily laid off

room rent

(Internet slang) dirty room

at-home clothes

an adult son residing with his parents; generally has not yet or can not come into family inheritance / a female servant working in a daimyō, ōoku, or other high-ranking house

(Magic: The Gathering) command zone

(grammar) absolutive case

(politics) an absolutist, one who favors autocratic government / (philosophy) an absolutist, an adherent of absolutism, as opposed to relativism

(mathematics) absolute value (numerical value of a real number)

(physics) absolute zero (coldest possible temperature, -273.15° Celsius)