the world > space > relative position > condition of being open or not closed > an opening or aperture > [noun] > opening which may be passed through > (of size) used by specific animal (3)
A hole used or made by a mouse for habitation or passage; a very small hole. Also figurative.
A hole in a wall, door, etc., large enough to let a cat through.
A hole in a wall or door for pigeons to pass through. Now rare.