Definition of "floorboard" [floorboard]

• A board in a floor. (noun)
• The floor of a motor vehicle. (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.

• "Then it creaked again, and he knew what it was: a certain floorboard that often talked to itself at night, with a sound so familiar that usually he never noticed it at all."
• "One of the items in the floorboard was a large, half-full can of beer, and the suspect had spilled most of a large cup of beer on himself and the car."
• "And on the floorboard was the scrawled, rambling suicide note."