1) Party 2) Party by or for new residents 3) Party for those on the move 
• (n.) A feast or merry-making made by or for a family or business firm on taking possession of a new house or premises.
House'warm`ing noun A feast or merry-making made by or for a family or business firm on taking possession of a new house or premises. Johnson. 
[n] - a party of people assembled to celebrate moving into a new home
noun a party of people assembled to celebrate moving into a new home
a party to celebrate a person's or family's move to a new home.