Pronunciation: (spī'nē), [key]
—adj., spin•i•er, spin•i•est.
1. abounding in or having spines; thorny, as a plant.
2. covered with or having sharp-pointed processes, as an animal.
3. in the form of a spine; resembling a spine; spinelike.
4. troublesome or difficult to handle; thorny: a spiny problem.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.