Informal A dilapidated or unsanitary dwelling. (noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "rattrap" in a sentence
"By the time it became my home it was quite a rattrap."
"The oldest one is counting the days until he turns eighteen and can leave this rattrap."
"Under the sink sat an old rattrap identical to the two that I had taken earlier."