- covered with or having spines, thorns, or prickles
- full of difficulties; troublesome; thorny
- Bearing or covered with spines, thorns, or similar stiff projections.
- Shaped like a spine.
(comparative spinier, superlative spiniest)
- Archaic form of spinny.
Part or all of this entry has been imported from the 1913 edition of Webster's Dictionary, which is now free of copyright and hence in the public domain. The imported definitions may be significantly out of date, and any more recent senses may be completely missing.