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adj. spin·i·er, spin·i·est
1. Bearing or covered with spines, thorns, or similar stiff projections.
2. Shaped like a spine.

spin′i·ness n.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.spininess - the quality of being covered with prickly thorns or spines
raggedness, roughness - a texture of a surface or edge that is not smooth but is irregular and uneven
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
Inheritance of flower color and spininess in safflower (Carthamus tinctorius L.).
He lists the following examples of predominantly human selection: Development of taller, less-branched plants leading to fewer, larger inflorescences, less spininess (fewer thorns), reduced toxins, and attractive flower colors or patterns.
Most caatinga plants grow on calcareous soils and are well adapted to drought (showing succulence, spininess, water storage organs, and other adaptations).