the GNU version of the Collaborative International Dictionary of English
adj. Destitute of heat; cold.
The Century Dictionary and Cyclopedia
Destitute of heat; cold.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
adj. without generating heat
Word Usage
"It didn't feel like spring when I recently drove up into the wolds near Pocklington, with snow-sprinkled verges still not thawed after an afternoon of winter sun – a low, heatless sun that gave rise to long shadows."