Definitions
from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun A state in which one thinks, especially carefully.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun humorous A
metaphor for a piece ofheadgear worn while one isthinking about how to solve a problem.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun a state in which one thinks
Etymologies
from Wiktionary, Creative Commons Attribution/Share-Alike License
From considering cap
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Examples
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skipvia commented on the word thinking cap
Tom Terrific's funnel-shaped magic cap that allowed him to morph. See The Captain's Place.
January 18, 2008
alexz commented on the word thinking cap
All this talk of 'thinking caps'.
The earliest thinking cap I found was 1839 http://books.google.ca/books?id=XaXQAAAAMAAJ
The New Yorker, volume 7 page 317.
March 20, 2013