the GNU version of the Collaborative International Dictionary of English
adj. Resembling shale in structure.
The Century Dictionary and Cyclopedia
Pertaining to, containing, or of the nature of shale; resembling shale: as, a shaly soil.
Word Usage
"The struggling line along the bank swayed back and forth, and finally a handful of surviving gorilla-men broke away and leaped down through the shaly gravel to the path below."