It means you should install a screen on your chimney to keep it from happening again.
It means you have a crow in your house.
An antonym is a word opposite in meaning to another, e.g. night - day, in - out, up - down. There is no antonym for chimney.
an umbrella
I don't get why, but it's an umbrella
A chimney.
What may go down the chimney up but not down the chimney down?
an umbrella
An umbrella
The member of the crow family known for flying upside down is the white-necked raven. This bird can perform acrobatic flight maneuvers, including flying upside down, which is a rare ability among corvids. Its agility allows it to navigate through complex environments in search of food and to evade predators.
an umbrella
Smoke
Smoke