a. [ From Spine. ] 1. Full of spines; thorny; as, a spiny tree. [ 1913 Webster ]
2. Like a spine in shape; slender. “Spiny grasshoppers sit chirping.” Chapman. [ 1913 Webster ]
3. Fig.: Abounding with difficulties or annoyances. [ 1913 Webster ]
The spiny deserts of scholastic philosophy. Bp. Warburton. [ 1913 Webster ]
Spiny lobster. (Zool.) Same as Rock lobster, under Rock. See also Lobster. [ 1913 Webster ]
n. See Spinny. [ 1913 Webster ]