the GNU version of the Collaborative International Dictionary of English
adj. Having no hat.
The Century Dictionary and Cyclopedia
Having no hat.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
adj. not wearing a hat
Word Usage
"I might have posed before your butler, perhaps, as belonging to what you call the hatless brigade, but the mud upon my clothes, and these unfortunate rents in my garments, would have necessitated an explanation which I thought better avoided."