housewarm
/ˈhaʊswɔːm/Now chiefly US
verb
[with object] To greet or entertain (a person) with a house-warming (now rare ). Later: to mark or celebrate (the move to a new house or premises) with a house-warming. Also without object: to give or take part in a house-warming.
Origin
Mid 17th century; earliest use found in Samuel Pepys (1633–1703), naval official and diarist. From house + warm, after house-warming.