HOUSEWARMING
housewarming
(noun) a party of people assembled to celebrate moving into a new home
Source: WordNet® 3.1
Etymology
Noun
housewarming (plural housewarmings)
(idiomatic) A party to celebrate moving into a new home.
The act of welcoming a person/family to their newly purchased or newly rented home.
Antonyms
• house cooling party
Source: Wiktionary
House"warm`ing, n.
Definition: A feast or merry-making made by or for a family or business
firm on taking possession of a new house or premises. Johnson.
Source: Webster’s Unabridged Dictionary 1913 Edition