The upper chamber of the UK's Houses of Parliament

(UK, humorous euphemistic slang, dated) A lavatory: a room used for urination and defecation. / (Scotland, humorous euphemistic slang, uncommon) A urinal.

(law) Confinement of a person to his or her residence, sometimes with a limited travel allowance, ordered by a judge or other authority as a more lenient alternative to imprisonment.

Alternative form of housewarming

A house habitually kept open to callers. / An event, often in one's home, at which there are few restrictions regarding who and how many may attend.

A relatively inexpensive wine sold in a restaurant, often by the glass as well as by the bottle or unmarked carafe; both red and white are normally offered.

(usually in the plural, Britain) Point awarded to a member of the house of a grammar school or public school for sporting and other achievement.

(slang) Prison, jail. / (slang, obsolete) The workhouse. / A religious building of the Delaware Indians, representing the cosmos. / Used other than figuratively or idiomatically: see big, house.

(US, slang) A cheap restaurant. / In the sport of rogaining, a central base camp providing hot meals and a place to sleep.

(slang) A hotel detective.