spiny
1. Abounding with difficulties, obstacles, or annoyances; thorny
2. Covered or armed with spines; broadly; bearing spines, prickles, or thorns
3. Slender and pointed like a spine
spintronics · spinulate · spinule · spinuliferous · Spinus · spiny · spiny anteater · spiny dogfish · spiny-finned fish · spiny-headed worm · spiny lizard