There is a house down the street with a big, majestic maple tree in the front yard. There is always a group of doves hanging out in that tree. A group of doves is called a bevy. I don’t know the people that live in that house but we affectionately refer to their home as “the dove house.” For example, “I was almost run down when some idiot went through the stop sign by the dove house.”
We also have a maple tree. It is far less regal than the tree at the “dove house.” Recently, a group of crows began hanging out in our tree. A group of crows is called a murder. I think that makes our house the “murder house.” I am fairly certain this is the definition of a metaphorical bad omen.