Definition of "lamebrain" [lamebrain]

• Informal A stupid person; a dolt. (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.

• "Daryll, stop copying entire comments, ya f ucking lamebrain!"
• "No matter what Obama does there are those who will make up lamebrain excuses to attack him."
• "She's a lamebrain idiot that doesn't even know enough to keep a password from being found out by a student."