An ivory tower is a metaphor for a place, or state of mind, marked by isolation from ordinary life. In poetry, it often suggests someone who is sheltered from common experience, especially a scholar, artist, or intellectual who seems cut off from practical concerns and human reality.
Poets may use the image to criticize detachment, but it can also suggest quiet distance, privilege, or a lonely world of thought.
Example
He wrote from his ivory tower of books,
while rain and broken sidewalks knew his name.
[n] a state of mind that is discussed as if it were a place; "he lived in the ivory tower of speculation"; "they viewed universities as ivory towers"